What is Stiff Biffy?
1.
Having a fully erect penis while wearing sweat pants.
"Dude, I got early the other morn'n and went to hardee's for a biscuit only to look down and see that I was totally sport'n a stiff biffy. The cashier called the cops when she saw the head peak'n out."
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Random Words:
1.
when ones nuts are hot and sweaty from sex, and someone is giving that person head and there nuts are hitting the other person's c..