When you take a shit in the toilet tank instead of the toilet bowl.
Guy 1: Dude I just took a Double Decker!
Guy 2: Aw no way man, right in the hotel bathroom! Right on!
The act defacating twice in 1 day.
Yo I had a Double Decker yesterday
When a girl is giving anal while performing a 69 with two guys both with hooked/curved dicks
Girl 1: I got into a double fisherman knot last night. It was intense!
Girl2: I always wanted to try one of those!
Child of their great-grandparent’s full sibling with the other great-grandparent’s full sibling.
My double-great-cousin-pibling is a good person.
When a person's neck and jawline is completely sagging from deepthroating a cock. Usually found on pedophiles as they carry too much weight promoting pedophilia, as nobody wants to have sex with an obese partner. Straight men usually get one. They obviously suck cock in secret (as their sagging jawline indicates).
Holy crap, that pedophile with a double chin deepthroater neck has the nerve to care about posture. How could posture be more important than weight.
the highest quality of dangly ball sacks.
"yo!" you got some nice double dangleys dad"
The Sunday Double is a surprise sex attack that happens on a Sunday during a double shift at work.
Jen and Eric are going in the freezer for The Sunday Double.