when u n ur homies chug multiple pints of milk all at the same time. Bonus points given to the first person to make a joke about jugs. Every Thursday is Milk Sesh Day. Possible side effects include "milk shivers".
Person 1: Aw man I'm gonna be late for class! Can you lie and tell the teacher I was in the bathroom?
Person 2: Nah I'm just gonna tell him you were having a milk sesh.
Person 2: Nah I'm just gonna tell him you were having a milk sesh.
by rotchmike290 January 23, 2020
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