regretarian 

Someone who has second thoughts after eating meat.

Alice: I feel so sorry for the poor little chicken who died to be our dinner...
Bob: Havin' a bout of regretarianism, aren't you?

regretarian by .NetRolller 3D October 6, 2017

Regretamine 

Feeling you get the morning after throwing up/ falling over/ talking to the wall about the universe being made out of segments on account on having over-indulged in the drug ketamine.

I thought I threw up on my front doorstep last night, but when I came round I realised it was my flatmate's bed. Major regretamine.

Regretamine by Maryapple May 7, 2009

Regretamin

Doing lots of ketermine and popping in and out of the hole aggresivelly.

Phil " I managed to turf through a whole gram of the mine last night on my own, dude am i regretamine'ing this

Regretamin by JRF17 December 14, 2010

regretamin

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"

regretamin by mandingo89 July 25, 2009

regretamine 

like forgetamine, another word for Ketamine, the drug. A strong narcotic, ketamine use can develop slight feelings of paranoia or a sense of regret.

I wish I hadnt done so much regretamine last summer I keep forgetting stuff.

regretamine by theoriginalMax May 28, 2007

Regretamine 

When you've been out on the sesh to hard and you wake up the following morning with regretamine from all the drugs you took the previous night.

Fuck I shouldn't of gone to hard last night now I have regretamine

Regretamine by KeyllyeK September 27, 2017

Regretamin

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.

Regretamin by Captain i shit the bed November 9, 2007