Definitions by Free-Daddy Mac

Whisker Biscuit 

The crusted residue left in ones facial hair after performing oral sex on their partner.

Tom: "Hey Jon, you've got something in your beard"

Jon: "Yea, I was muckin' Sally's barn earlier today and she left some whisker biscuits in there. I'm saving them for later"

Whisker Biscuit by Free-Daddy Mac April 1, 2016