It's a slang Cork pronoun. Cork is a place in Ireland where they all talk incomprehensibly, and anyone from the rest of the country just nods, smiles and backs away.
"A'right boyo, didja see the langer o'er there like?"

=

Hello there you, did you see that nasty person over there?
by Sean December 9, 2004
Get the boyo mug.
Young irish lads( boys, teens), Male band group...
Thr cop was heard saying "keep an eye on them boyos"...as the y gathered near the gate...........The boyos will have to come up with a Patriots song for the SuperBowl......
by Sheepstealer January 23, 2012
Get the boyos mug.
I've recently read 'Angela's Ashes' a autobiography or memoir written by Frank McCourt and Irish author. Within said book is a sex scene in which Frank takes off all his clothes and gets and erection, his partner looks at him and says "Lord, you might be a scrawny bit of a fellow but that's a fine boyo you have there". This leads me to believe that in the 1930's in Ireland, more specifically Limerick Boyo was a slang term for a penis.
That's a fine boyo you have there
by Timothy Dangleboxers May 29, 2008
Get the Boyo mug.
*looks up* its welsh duuuuuur. not irish!
jay-sus....
my names Al-an and im from Way-els boyo!
by Pretty Vacant May 17, 2004
Get the boyo mug.
A word Invented by Tim which is used to describe a group of boys.

you can also call it the boyos army if you prefer.
Hey Bro are you also part of the Boyos? It's like a cool group Tim invented!

wait, didn't Philip come up with that name?
what are you talking about? Boyos Was definetly Invented by Tim!
by Gian69420 January 23, 2022
Get the Boyos mug.
The balls of a man. Thats all you need to know. Own them before its too late. The male body part also known as a scrotum. It contains two of the most important body parts that any man in this world would never want to lose. Origin of this word is from Canada specifically from the capital.
She really has his boyos in her hand. (Whipped)
Man I got kicked in the boyos.
The squirrel like his boyos.
by YoWHoDAT?? September 19, 2011
Get the Boyos mug.