A) very passive aggressive way to say "stop it".
Usually used when insulted in a stupid way.

B) phrase used after you see something very cute, funny, or cool.
A)
Ron- "Where did you get that suit, the toilet store?"
Bob- "Stahp it, Ron."

B)
Steph- "Look at this video of a cat meowing underwater."
Brooke "Stahp it, that is so funny."
by Brookiesweetheart March 8, 2013
A rather famous word uttered by the scientists in Half-Life when they are injured.
Me: accidentally shoots scientist
Scientist: STAHP
by DaDude001 December 7, 2019
A way of saying stop, when you don’t actually want someone to stop
Person 1- you’re so beautiful
Person 2- oh stahp, you’re too kind
Person 1- ...
Person 2- WELL WHY’D YOU STOP THOUGH
by Arnarity June 23, 2020
Stahp is a term used commonly amongst internet users primarily on the thread website Reddit. Stahp is typically used to express exasperation of a subject and an insistence on stopping the conversation. Stahp comes from the phrase Stop That and Halt Please.
by Pinkykilla December 2, 2016
In memes simply stop, usually meaning stop doing something horribly wrong.
Jesus while crucification:
Jews
Wat R U Doin?
Jews
STAHP
by Krapik September 12, 2012
A comedic way to say stop. The word “stahp” is a combination between “stop that” and “halt please.” The term “stahp” is most commonly used on the internet, especially memes. It’s used with a slight sense of urgency and with a want of stopping something horrible or vulgar.
Hitler: Pass the juice
Nazi: He said gas the Jews
Hitler: Wait-
Other Nazi: Okay
Hitler: STAHP
Jews: STAHP
by Retarded genius January 10, 2018