What is Hourglass Effect?
1.
A side effect when the act in which two or more people engage in anal sex occurs. When a man inserts his penis into another's asshole, and then the person squeezes said asshole, the penis is then contorted into an hourglass shape. This is the hourglass effect
Bill: "Stop squeezing your asshole! You're givin' me in hourglass effect!"
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