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

by Dueir2 February 17, 2019

A person who cannot see the positive in a situation and vocally complains, usually getting butt hurt.
Can't say anything around Thom cuz he always so sensitive and take shit the wrong way. H needs to just 420 and chill instead of always being a sour bucket.
by treble_maker January 25, 2018

The Sour Sloth is the sexual act of taking your girl from behind, fucking her hard enough that she walks slightly bent over afterwords. The sour part comes next(and also on her face), Simply bust a nut into her nostrils right before she asks to cuddle. Thus; she sluggishly wanders like a Sour Sloth to the bathroom to get cleaned up.
Person 1: My girl and I decided to experiment with different kinds of sex acts last night. Person 2: Oh yeah? Cool. What'd you end up doing? Person 1: She got kinky so I decided to turn her into a Sour Sloth.
by Heisenbyrge II May 13, 2016

by Formidable stank April 21, 2018

When your having sex with a girl on CINCO DE MAYO, and she asks you to cum In her hat...and you do...But you through it in the corner and frget about it....few days later the ( Sour SOMBRERO) ...!!!
Man she told me to give her a SOUR SOMBRERO...but she didn't have a hat....I did it anyway...also known as the crown o cream....
by Sick Em D August 24, 2022

by throwthisshitaway June 14, 2016
