What is Shlup?
1.
One who acts in a foolish manner or stupidly.
You are being such a shlup.
2.
shortened version of
hey Shlup! your boyfriend's name is BJ! which stands for blow job! lolz!
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3.
Noise made while having sex.
Guy: "Wow, we're having some good sex."
Girl: " Yes. Yes we are."
*Backgound noise: "Shlup shlup shlup shlup shlup shlup shlup shlup shlup shlup shlup shlup shlup shlup."
See