Something that really makes the anus clench. For example, something happens which is totally unexpected and shocking.
Coen: I was doing an obby in Roblox but fell near the end and had to restart from the beginning.
Brody: Damn son, that's one real anal clencher right there.
Brody: Damn son, that's one real anal clencher right there.
by Teej Maheej April 9, 2020
Get the Anal Clenchermug.