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"
by ~Aesop~ October 9, 2009
Get the Instant Regret mug.
Inviting Big E to your bachelor party and realizing he is going to bring up memories of it for the next 48 years
Hey Sarah I heard you hooked up with some random kid at a party last night?

Yeah, talk about instant regret
by BigEElittlePP March 13, 2022
Get the Instant Regret mug.