Clinch

The combination of clench and cinch;
Where a person does something amazing and has to clench there butt-hole, but makes the feat look effortless.

Adam clinched last night when he did a double back-flip.
We thought Katie was going to clinch it, but she did a face-plant instead.

Cold Clinch

Whe the woman your having sex with has Covid 19 and she coughs repeatedly....causing her vagina to clinch several times, until you cum.

Hey babe since you coughing I'm going to stop and get you some medicine...but before you take it can I get a COLD CLINCH..???