When a male places both his testicles in his partners mouth and the partner moves them side to side and pushing their cheeks up like a chipmunk.
Brad: I gave my girl Abby a dirty Alvin last night.
Someone who like to do More than 30 sex positions at one time
14👍 3👎
Someone with a ginormous fucking cock who inserts it through 5 woman at the same time while satisfying all of them.
"Did you do the dirty alvin last night?"
"Yeah, All the girls were so satisfied by my gigantic cock"