What is Jmb's?
1.
Short for "Jiggling Man Boobs." The repulsive, yet somehow hypnotic undulations that occur when an over-sized man's chest bounces around like soft jelly during an earthquake.
That dude has JMB's of mass-repulsion.
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1.
Where several men have sex with a woman unprotected, and the loser is the one who impregnates her.
"Man, I just found out I lost t..