What is Silent Submarine Sex?
1.
The act of performing a sexual act while one or more people are in the same room.
Usual occurs at drunken parties and gatherings.
Dude, I Silent Submarine Sexed Sarah last week after you passed out on the couch,
or
Me and Sarah had Silent Submarine Sex on the floor while you guys were playing monopoly.
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A seatbelt that's been left outside a car when the driver closed the door. The metal end flaps and clunks against the side of the c..
