These girls are very, very rare. They will ride on top of their partner for extended periods of time, and will only stop when the male gives her permission to stop. Ironically the word tramp is used in the description of the word.
Normally found on the South coast of England.
William: It was my lucky night last night, I met a cracking blonde and it turned out she was a "Trampoline Whore"!
Gregg: You lucky Bastard, I thought those girls were just a myth, like the boomerang whore or the slut bunny.
William: Well I'm not a liar, she rode me all night and only stopped when I told her To make me a bacon butty.