Definitions by Maher (AKA Guitar Legend)

Do a Byrnsey 

Verb. Drinking excessively to the point of vomiting on oneself. May also mean sleeping in one's vomit.

"Mate I got so drunk I peed all over my friend's floor".
"Mate, at least you didn't do a Byrnsey".

Do a Byrnsey by Maher (AKA Guitar Legend) September 23, 2011