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 Loobergs February 24, 2014
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Love you most emphasized by saying it twice.

Originated from a freshman in Boston University as a term for endearment and/or a "filler" word
Everyone: "I'm stressing out so much for this exam, paper, homework, etc"
Me: "Lum Lum"
Everyone: "... Lum Lum"
by TheRealPotatoGod March 03, 2017
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Columbia,Pa. the city right outside of Lancaster,Pa.
Im tryna get out Lum Lum
by grimloc April 20, 2009
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Scots word for Chimney or flue,allows the reek to exit a house!
Santa Clause is comin
He's comin doon the Lum!
Ye Better Pit The Fire oot!
in case he burns his Bum!
by Alba gu Brath July 04, 2006
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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
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19-20th century vernacular for the vagina. A 'lum' was initially a slang word for the flue that drew smoke from an open fire up to the chimney on the rooftop. Lum as a slnag term is quite popular with women of a certain age and social background.
Ah'm goan away tae Benidorm tae get ma auld lum swept by they spanish waiters!!
by Skirtlifter January 10, 2005
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Acronym for Laughing Under Mask. Originated during 2020 coronavirus pandemic when wearing mask became commonplace. Use like LOL
OMG LUM, that was hilarious!!”
by Thetigergirl November 26, 2020
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