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 September 28, 2008

Summing

Sport or recreation

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

by Isabellathefirst January 13, 2009

sum

'really' or 'very'

'thats sum cool!' or 'hes sum hot!'

by i have no life May 15, 2005

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 28, 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 October 13, 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 August 2, 2008

sum sum ig

an instagram account made by a boy where he posts pictures of himself pretending to be a woman

look at him, he's posting for sum sum ig again!

by averyone's mr tang April 12, 2021