When something is so suspenseful, tense, or exciting that you clench both butt cheeks together the whole time. ie sports game, movie, tv show
Did you see that Bills/Chiefs playoff game last night? What a cheek clincher!
I watched Avenger Endgame today, it was a real cheek clincher!
I watched Avenger Endgame today, it was a real cheek clincher!
by JoeG86 May 5, 2022