SUM

"SUM" is a shortened direct command with a meaning similar to "be quiet"', but which is commonly perceived as an angrier and more forceful demand to stop making noise or otherwise communicating. The phrase is probably a shortened form of "shut your mouth up", and its use is generally considered impolite.

Laura: I'll really hate rain, it scares the hell out of me. I mean were does it come from, can you drink it?

Dude: SUM bitch!

by Glasstt August 30, 2011

Sum

It can be used as something or as some but really mostly to get booty pics from a girl or said when you got some pussy.

You heard that will got sum last night?

Hey wanna send sum?

by Snap-Zurmii13 July 09, 2019

sum sum

a underground word for a girl's period.

Girl1: Are you okay? You seem pissy.
Girl2: i'm on my sum sum
Girl1: ohhhhhhhhh

by xXFuckPrettyXx August 04, 2008

Summing

Sport or recreation

Bob: "Do you like summing?"
Jake: "Ya, I play baseball all the time"

by Isabellathefirst January 13, 2009

Sums

The ratio of seats to bums on public transport, particularly relevant to rail travel.

Southeastern never seem to get their sums right!

by EmptyPots March 24, 2015

Summing

When one Sings and Humms at the same time! It is quite a pleasant sound a bit like a young walrus' mating call!

I was walking down the street Summing to myself

by Chemshotlord August 31, 2015

*SUMS*

Acronym for "Super Ultra Mega Slap"

Used when insulting or scolding someone for what one thinks is tasteless, immoral, or just fucking retarded.

May also be followed by an actual slap.

Coined in 2004, by a kid with an itchy fro and another kid who was just trying to fit in.

Me - Hey Colton, I just went out and bought the new Nightmare Creatures game!

Colton - *SUMS*

by superskiier July 11, 2008