NSS

A kind of sleepover that involves a girl that just wants to cuddle and a guy with an uncomfortable boner all night long.

Polsy and Heller had an NSS last night?

Did they ... ya know?

No, dude it was a NSS. Non sexual sleepover.

Oh, thats gay.

Exactly!

by HellerKeller69 April 5, 2010

NSS

No simp shit

One who has strong feelings for someone but doesn’t want to consider it simping

NSS I really like this girl

by Symbols March 19, 2021

NSS

Non Sexual Sleepover

Hey i had an nss last night. This girl was so prude.

That girl has a tattoo on the lower back, she definitely does not nss.

by Chu face April 3, 2010

NSS

Natural Science Seminar - An oral presentation lasting 30 minutes by undergraduate science majors, often about their undergraduate research.

Dr. Brock tore Samantha's research methods to bits durring her NSS last week. Poor Girl.

by WWC Wombat February 2, 2006

NSS

No Shit September
The act of not defecating for an entire month of the year

-are you doing NSS?
-are you autistic

by Boi Harambe Alen December 4, 2019

NSS

If you are from Ansley’s or Aj’s snap in NSS means (next school shooter) sorry Chase it’s true

Chase could be NSS

by toonyans January 15, 2021

NSS

Noun. An abbreviation for the medical term: Nasoom Sleepless Syndrome. This term is considered to be out of date by many experts in the field and hence has lost its place in the modern medical texts.

Doctor: I'm afraid your symptoms are consistent with NSS, or Nasoom Sleepless Syndrome. I will prescribe you some Ambien, it should help you regain your normal sleep pattern.

by tictocdoc May 14, 2011