Where a man goes to put a condom thats too small on and it makes the penis look like an hourglass.

(noun) A successful type of theft which results in an acceptable, impressive and rewarding payday for the protagonist.

When a guy goes into cold water and his ballsack shrinks around his testicles, resembling a sideways hourglass.

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