Top Definition
1. (verb) having sex in a simulated-skydiving vertical wind tunnel.
2. (noun) the act of having sex in a simulated-skydiving vertical wind tunnel.
2. (adj.) used as part of a description for a fun experience or especially provocative sexual experience that can be compared to having sex in a vertical wind tunnel.
1. 'I took Jennie to my personal vertical wind tunnel, but my dog walked in on us Free Fall Fucking before we finished.'
2. 'That roller coaster almost compares to my Free Fall Fuck.'
3. 'This is so Free Fall Fucking amazing!'
by Patrick McGiantGroin October 05, 2008

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