1 definition by Mrblue520

Top Definition
Building a fort refers to the act in which you tie up or other wise restrain your partner in a sexual manner.
Greg "Hey dude can I borrow some rope?"
Tom "Of course. But why do you need rope?"
Greg "Well Samatha and I are building a fort tonight."
Tom "Ohhhhh okay just don't get any stains on it."
by Mrblue520 February 08, 2010

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug