The process of excessive drug use of your choice with a small to medium group of friends, sometimes people you don't even know. This usually occurs outside in a recreational park or a small, sweaty bedroom. The 'sesh' (short for session) usually ends when the sunrises, however can continue for as long as your body and jaw lets you.
Clarence: Yo what you doing tonight?
Lez: Not much g, think Mike is having a sesh round his tonight, you game?
Clarence: Yeh man, that's bless.
By Hadria
The Sesh
when one spends an evening getting drunk/wasted/sloshed with a group of friends.
An abbriviation of the word session, may relate to drinking, smoking pot, excessive computer gaming or anything else that lasts a prolonged period of time.
"Man, my butt hurts after that curry sesh at Shamal's place last night"
By Bette
Sesh
A 'sesh' is when a person or group get so twisted that there in a gaff at 6AM gurning back out £150 down with a blocked nose filled with Ket. Drinking isn't a sesh