Winkle

A winkle is a person that you’d like to call a profanity but won’t. So you call them a winkle instead.

Person 1: Dude, you’re a di—
Person 2: Shh! The teacher is walking in! Just say ‘winkle’.
Person 1: Dude, you’re a winkle.
Teacher: Kids and their slang these days. Sheesh.