What is Regretamin?
1.
Ketamin, your super cool friends who do Ketamin most weekends but ALWAYS complain about the comedowns etc afterwards but are complete and utter fucking idiots and do it again with the next day saying the same thing, doing the same thing, you guys get old and boring real fucking fast.
Stupid fucked up space cadet that will work a shit job for the rest of their lives: Im going to do Ketamin again tommorow.
Normal person: Dont you mean Regretamin you fucking dolt cunt stain faggot.
See
2.
Another derogatory term for ketamine. specifically denotes a k sesh that results in embarrassment or regret.
"Bobby mate how'd you get all those fag burns on your face??"
"errrr.....that'll be the regretamin"
See