Why I drink
Why I drink is a phrase derived from the animation Ramshackle by Zeddyzi, specifically a common line for the character Stone. The phrase why I drink or This is why I drink can be used to denote extreme agitation or annoyance.
Person 1: does some dumb shit
Person 2: *points over* Why I drink
Person 2 (alternate timeline) : This is why I drink
Person 2: *points over* Why I drink
Person 2 (alternate timeline) : This is why I drink