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A sexual act that involves smearing edible substances like peanut butter or honey or chocolate syrup around one's privates and having another person lick\eat it off.
She gives her boyfriend so many zipper subs, she can't eat peanut butter sandwiches without thinking of sex.

Her husband caught her getting a zipper sub in their basement from their two rottweilers!!
by azadus November 17, 2005

Words related to ZIPPER SUB

head food sub yummy oral zipper skipper zippersub