When a womans breasts appear to be of a large size, but when one attempts to fondle or grab them they promptly dissappear into the chest. (eg. filled with air)
Billy and Sally were under the slide at the play ground. As Billy attempted to go to second base he encountered a Houdinni!
While in the doggie style position you spit on the girls back . This will fool her into thinking that you just came on her . When she turns around you blow your load in her face.
Hey Jeff sorry but last night while you were asleep I showed your wife what a houdinni was.