Instant Regret Share definition Flag When you fart immediately after getting out of the shower, thereby negating its effects. "Aww, man!" "What?" "I just got out of the shower, and i think that fart was wet... Instant Regret" Instant Regret by ~Aesop~ October 8, 2009 0 0 Get merch Get the Instant Regret mug. Buy Now — $32.95 See more merch