Roedd yr haul yn gwenu'n braf dros gampws Brifysgol Caerdydd, ond roedd rhew oeri'r hydref yn atgoffa pawb fod Nadolig yn agosáu.

The sun was smiling brightly over the campus of Brifysgol Caerdydd (Cardiff University), but the chilly autumn frost reminded everyone that Christmas was approaching.

Roedd lliwiau llachar ar hyd y coridorau, â golau twinklo yn hongian uwchben.

Bright colors lined the corridors, with twinkling lights hanging overhead.

Roedd myfyrwyr yn brysur yn rhuthro gyda'u hysbyllau a'u hetiau, yn trafod gwaith cwrs a hoff ddiod y tymor.

Students were busy rushing with their backpacks and hats, discussing coursework and their favorite seasonal drinks.

Wrth gerdded i lawr y coridor, roedd Gareth yn edrych yn anghydnaws.

As he walked down the corridor, Gareth looked out of place.

Roedd wedi gwisgo crys Nadolig dros ben - llachar, gwyrdd gyda Santa yn dawnsio - a sliperi blewog am ei draed.

He was wearing an over-the-top Christmas shirt — bright, green with a dancing Santa — and fuzzy slippers on his feet.

Roedd yn nerfus oherwydd cyfweliad pwysig ar-lein gyda cwmni breuddwydiol oedd yn digwydd mewn dim ond hanner awr.

He was nervous because of an important online interview with a dream company happening in just half an hour.

Roedd wedi arfer rhoi argraff dda wrth eraill, ond heddiw roedd ei ffocws wedi mynd yn groes dde i'r drws.

He was used to making a good impression on others, but today his focus had gone awry.

"Clinc!

"Click!"

" Roedd y drws wedi cau a Gareth ar y tu allan.

The door had closed with Gareth on the outside.

Dim bysellau.

No keys.

Roedd ei ystafell ar glo, a Gareth yn anobeithio.

His room was locked, and Gareth was in despair.

Edrychodd i lawr ar ei ddillad, yn teimlo fel sbardun i chwerthin unrhyw un fyddai'n cerdded heibio.

He looked down at his clothes, feeling like the butt of the joke to anyone passing by.

"Dyn, a angen cerdyn i fynd yn ôl i mewn nawr," meddai Gareth iddo'i hun yn llawenwinda.

"Man, I need a card to get back in now," he said to himself with a wry smile.

Dyma lle daeth Carys i'r awel.

That's where Carys came into the picture.

Roedd hi'n arfer tynnu coes Gareth am faterion o'r fath.

She often teased Gareth about things like this.

Am eiliad, roedd Gareth wedi petruso gofyn am help ohono hi, ond fe benderfynodd wneud.

For a moment, Gareth hesitated to ask for her help, but he decided to do it.

"Carys!

"Carys!"

" oedd ei waedd desperado.

was his desperate call.

Roedd hi'n dod i lawr y coridor, gwên gwych ar ei hwyneb.

She was coming down the corridor, a beaming smile on her face.

"Be’ sy' di digwydd 'na, Gareth?

"What happened here, Gareth?

Nag it ti'n edrych fel stori o Bentref Bach yr hin?

Don't you look like a story from Pentref Bach yr hin?"

"Heb os, roedd ganddi gard bysell am ei ddrws.

Without a doubt, she had a key card for his door.

"Fe wnes i anghofio cloi, wyt ti'n gallu helpu fi?

"I forgot to lock it, can you help me?"

" meddai Gareth gyda gelyn ddiolchgar ar ei lais.

said Gareth with a grateful tone in his voice.

"Wel, mae’n rhaid i rywun rhoi peth sbort i’r anrhydeedig," atebodd hi, ond fe agorodd y drws.

"Well, someone has to provide some sport to the dignified," she replied, but she opened the door.

Cyn gynted ag y medrodd, Gareth ffrwyth fesul tair cam i mewn i’w ystafell.

As soon as he could, Gareth darted three steps into his room.

Ond doedd dim amser i newid.

But there was no time to change.

Roedd y cyfweliad yn dechrau mewn munudau.

The interview was starting in minutes.

Roedd Rhys, y Cynghorydd Neuadd, yn dyddio ar ochr y coridor hefyd.

Rhys, the Hall Counsellor, was also hanging out on the side of the corridor.

Fe wnaeth ddatguddio gofalu am hugan Gareth, gan gadw sgrin elog.

He revealed taking care of Gareth's mess, keeping the screen ajar.

"Hwyrach yw hynny'r crys mwyaf!

"Perhaps that's the most shirt!"

" roeddwn yn gweld ei chwerthin.

I could see his laughter.

Fe ddaeth Gareth allan eto gyda'i gliniadur, yn gwybod nad oedd ganddo opsiwn arall ond i fyned mewn gyda'r crys ambellgaith yn sefyll allan wrth ymyl coneg.

Gareth came out again with his laptop, knowing he had no other option but to go in with the occasionally standout shirt next to the cone.

Roedd yn amser mynd ato am spri y cyfweliad, heb newid, mewn coridor brwnt.

It was time to head for the interview fun, unchanged, in a dingy corridor.

Wrth ddechrau, fe gododd ei flaen ynghylch y crys.

As he started, he raised the topic about the shirt.

"Mae dyddeglen fy mywyd yn dweud mai yw'n ymwneud a defnyddio hiwmor," esboniodd Gareth, gyda'r boen yn driphlyg ond mewn gwirionedd, roedd y cyfweliad yn llawn straeon da.

"My life's agenda says it's all about using humor," explained Gareth, with the pain tripling, but in reality, the interview was full of good stories.

Dros amser, llwyddodd Gareth i dynnu hiwmor allan o'r sefyllfa mewn ffordd drws, yn llawn cysur o wybod bod hi'n crwydro.

Over time, Gareth managed to draw humor out of the situation in a way that opened doors, full of comfort knowing it was meandering.

Roedd y cyfweliad yn llwyddiant, a Gareth yn dysgu bod hiwmor a hyder yn gallu troi sefyllfa lletchwith yn llawn posibiliadau newydd.

The interview was a success, and Gareth learned that humor and confidence could turn an awkward situation into one full of new possibilities.

Gwyneb canmoliaethus, dechreuodd gyda newydd uchelgais, gan edrych ymlaen at ddathlu Nadolig gyda chalon llawen.

With a complimentary face, he started with new ambition, looking forward to celebrating Christmas with a joyful heart.