Fionn

An Irish name descending from Gaelic families. Nowadays Anyone who is called Fionn is a complete arsehole and is a boney and skinny prick. Cracks every fuckin bone in his body every 2 minutes

'See that lad over there'

'Yeh he looks like a Fionn'

'Yeh exactly'

by Irishman2121 October 20, 2019

Fionn

Absolute plank and a dickhead

Oh you are sharing a room with fionn I feel bad for you

by That really cool girl August 17, 2019

Fionn

A genius who will delete your discord server if you mess with him.

I annoyed Fionn....my Discord server got practically massacred a day later.

by DemonicManiac March 29, 2021

Fionn

Fionn fat thick

I never knew that guy Fionn was that FAT! You should've told me.

by TiddyConsumer34 March 9, 2019

Fionn

Faggot, spastic

Fionn is a spastic faggot

by Hajakahajaka November 23, 2018

Fionn

An Irish name descending from Gaelic families. Nowadays Anyone who is called Fionn is a complete arsehole and is a boney and skinny prick. Cracks every fuckin bone in his body every 2 minutes

'See that lad over there'

'Yeh he looks like a Fionn'

'Yeh exactly'

by Irishman2121 October 20, 2019

Fionn

To Fionn is to eat large quantities of fatty foods or unhealthy food from a fast food outlet (such as McDonalds). The general result is an obese person or a fat ass (most commonly used in reference to males). If you were Fionning, you would be eating the food.
It can be used in context as a noun and as a verb.

Hes eating like a Fionn in a McDonalds!

by Marc Whelan February 16, 2007