A playful term with which some older(mid-to-late forties) African-American females(cougars) have chosen to affectionately label younger(mid-to-late twenties) Caucasian males.
by javabeans October 14, 2008

A bulge that may arise in old women (and young alike) that resides in the stomach region. unlike a pregnant woman, there is no baby inside this lump but maybe some fatty pockets. most clearly seen when women wear their pants up higher than their waist.
by bellevue citizen May 8, 2004

When a girl has a wallet, phone, pack of cigarettes, etc. in the back pocket of her tight-fitting jeans, thus causing an odd protrusion from her butt.
Jamie: Man, if that girl is gonna wear such tight jeans she better upgrade to a smaller phone!
Christina: Yeah, shes got some seriousss lump ass!
Christina: Yeah, shes got some seriousss lump ass!
by Nathan T April 1, 2008

Someone who is acting uptight or irritable, thereby ruining everyone else's good time.
Emma: "They're just a sour lump in the mix,"
Angelica: "Don't be such a sour lump, Liam!"
Emma: "They're just a sour lump in the mix,"
Angelica: "Don't be such a sour lump, Liam!"
Liam the Sour Lump: "That wasn't funny, guys. >:("
Friend 1: "What's the matter with him?"
Friend 2: "Oh, don't mind him. He's just being a sour lump like always."
Friend 1: "What's the matter with him?"
Friend 2: "Oh, don't mind him. He's just being a sour lump like always."
by meluvcheese22 June 12, 2016

putting (or lumping) all asian peoples into one depicting category that does not fit all asian people or cultures.
by blue shirt February 11, 2022

The act of grouping people you hate together as if they were all the same person; usually giving them all the same disparaging handle or slur.
"How is it that all you conservatives are racist nazis?"
"How is it all you progressives are communist pedophiles?"
"Would you both just stop Lump-Summing eachother?"
"How is it all you progressives are communist pedophiles?"
"Would you both just stop Lump-Summing eachother?"
by Muttemor September 3, 2022
