A male greeting. Two gentlemen see each other in public and give each other a hearty pelvic thrust. They're testicles smack together creating a bag bump
by The 4 panis September 16, 2017
It comes from changing the word in a song from “Lady Bump” to “Liar Bump”, it means the word “liar” can walk outside from English dictionary and dance…dance…dance…in every ways ,finally, it’s called “Liar Bump”. This word is for a lady who likes to tell a lie in everyday life. She doesn’t have respect for herself.
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