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1.
an average person who does not interest you in any way
Sanjay "Did you meet George's new flat mate?"

Rachel "Yeah."

Sanjay "Whatd you think?"

Rachel "Meh, bit of a lum lum"
by Looburgs February 24, 2014
9 0
 
2.
Columbia,Pa. the city right outside of Lancaster,Pa.
Im tryna get out Lum Lum
by grimloc April 20, 2009
10 11
 
3.
A lum lum is a small woodman creature known for his sneaky ways and explicit sex life that has been known to keep the majority of his habitat up. On a normal day, one can find the lum lum sitting calming in his cave with headphones on, or dry humping olga. There is still debate to this day whether the lum lum has been sexually connected to the LUUM LUUM, another species that shares his cage but is pronounced with a much longer and drawn out tone.
Girl: i wanna go hunting for Lum Lum
Boy: Slut
by Sasgood February 06, 2008
15 31