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1.
Just coined about 2 and a half minutes ago. A sex fort may be created for the performing of sex in a room that already doesnt have much privacy -such as a dorm room. Hence, a smaller room created with blankets, pillows, cardboard etc., in a already small room.
"Hey Matt have you seen my girlfriend? she was out walking the dog."

"Yeah bro they're in my sex fort, sorry but how could you miss us you were in the room"

"Ohhhhhh nice!"
by Mikendanatt January 30, 2011
 
2.
Just coined about 2 and a half minutes ago. A sex fort may be created for the performing of sex in a room that already doesnt have much privacy -such as a dorm room. Hence, a smaller room created with blankets, pillows, cardboard etc., in a already small room.
ohhhhhh nice!
by Mikendanatt January 29, 2011
 
3.
Noun. Usually found in the least used day rooms of dormitories that do not allow co-ed visitation, a Sexfort is comprised of pushing the front of two couches together and pulling a blanket over the top to ensure the privacy of the occupants. Sexforts are observed most often on Air Force AETC bases.
The young couple were unexpectedly caught in their Sexfort when a MTL was making surprise rounds on the weekend.
by Blue128 February 10, 2008