To throw up. Taken from the German phrase "ruckwarts essen." (eat backwards)
"Ever since I moved to Germany, I have seen so many people eat backwards you would think it was cool."
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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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