lum 

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

ttyl, lum

lum by lite1700 September 4, 2011

lum-fao 

The verbal pronounciation of LMFAO!!!

copyrite by SARS.Got.Milk? nah im just kidding.

LUM-FAO!!!1one I JUST PWN3D HIM!!!

lum-fao by Charles December 1, 2004

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"

lum by jermimah March 22, 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.

Lum by Billy Banks August 2, 2005

lum out 

sleepy, lethargic, tired and moving slowly, maybe a little depression mixed in

Nah man, I can't make it to the party I am just gonna hang around and lum out.

lum out by Clemzon June 30, 2017

Lum 

To be in a sitting / standing position, bend your head down , and touch your penis

Hey I do you want me to lum infront if you? It’s pretty hot btw

Lum by Scranielle October 18, 2020

Lum 

(-ming)(Verb) Laughing and cumming.

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

Lum by LightFoe April 17, 2021