Lum

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

Lum

LUM or Lum stands for Lazy Useless Motherfucker, someone who is lazy & useless during work or in general

At work Bradley is a Lum. OR That guy is a Lum he never does anything, What a Lum

by Skitty54 June 25, 2009

Lum

Lum is the name giving to a boy named Callum if he is a friend of a girl called Bingbing. His friends will start calling him Lum/Llamalashes/Calcilum and eventually, he will get stalked by the girl. He is not very popular but has fan accounts.

Lum get over here

by TwinSync March 13, 2019

lum

Acronym for "love you much"
Sent in a text/tweet/email to someone you care for.

ttyl, lum

by lite1700 September 2, 2011

lum

when someone has no definition of their bum. i.e a flat bum. when their bum and legs appear as one.

"omg that girl over there has got a proper lum"

by jermimah February 10, 2012

Lum

The name of the alien invader's(aptly named Invader) beautiful daughter in the anime comedy classic "Urusei Yatsura"

Lum is constantly making her fiancee Ataru Moroboshi's(Supreme Prevert) life a living hell in order for him to finally recognize her as his one and only love interest. She accomplishes this task throughout the series with the help of her various powers, gadgets, friends, etc.

Lum lost to Ataru in the contest over invading Earth, when he finally stole her bikini top and then grabbed her horns.

by Billy Banks July 14, 2005

Lum

(-ming)(Verb) Laughing and cumming.

Millie was hysterical! She was lumming all over the house!

by LightFoe April 18, 2021