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.