1. Colloquial/Slang for falling asleep mid coitus
2. Colloquial/Sland for leaving early from a party to go home and sleep
1. Person 1: Um...
Person 2: Snore
Person 1: Oh well he/she's done a chonaill
2. Person 1: Mick's taking a long time in the loo
Person 2: Na mate, he's done a chonaill