The worst insult ever known to mankind. It means that someone is not only a prick, they're the whole cactus. This extremely offensive word was believed to have originated in the Medieval ages or before that. It is the worst insult ever. 'ur mom a cactus' is even worse than 'ur mom gay', 'ur papa a nazi', 'ur gran gran a trans man', 'ur dad a lesbian', 'ur cousin a muffin' and the N word. It is not a bad as 'ur mom trans' and 'ur papi nazi'. This word is also worse than 'Karen'.
Karen: Why did you block me? Ur mom gay.
Donna: Ur mom a cactus.
Karen: That hurts.
Donna: Just avoid ur mom and you'll be fine.
Karen: I'm gay.
Donna: Yes.
Donna: Ur mom a cactus.
Karen: That hurts.
Donna: Just avoid ur mom and you'll be fine.
Karen: I'm gay.
Donna: Yes.
by Pigeon girl June 22, 2020
Get the ur mom a cactus mug.by efgwrgwrgsaegwe September 18, 2018
Get the ur-ban dictionary mug.A derogatory phrase used for pretty much no reason and in no context that makes sense, but also the woman I spent the night with yesterday.
by The Milkman1 January 6, 2021
Get the Ur Mom mug.by Wikipedia boiiiiii January 11, 2019
Get the Ur mum gay mug.by yourFriendsal October 8, 2022
Get the ur mom mug.by Braeeeeeeeee July 15, 2022
Get the Ur mom mug.