A crazy-ass gathering of some description.

A gathering of people, usually involving copious alcohol consumption and thus subsequent alcohol fueled antics. Most of the time this will result in baaaare drama going down. The more drama, the madder the sesh.
Guy: I'm so ill. Haven't moved all day! What a mad sesh!
by Clayr89 January 2, 2011
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a mad sesh is where the mandem go farting and kill the garda rats
yo leng ting
ya
when’s next mad sesh
tomorrow
by big mul sesh queen September 25, 2021
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