Sexual hisasser 

Someone who makes unwanted or inappropriate sexual advances to a dude

That cougar I work with hit on this guy from the custodial pool, she is a total sexual hisasser

Sexual hisasser by Davedale August 9, 2019

HISSS 

The warcry of Leafyishere army, who aims to t<ke over Youtube by overthrowing non-reptillian scum.

Youtube comment 1: Well, at least the reptilians aren't here yet
Youtube comment 2: HISSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS
Youtube comment 3: Leaf a like!
Youtube comment 4: Leafy fist me <3

HISSS by a<vg<sFNBF December 4, 2015

hissssss

The reptilian brotherhood

Hisssssss

hissssss by ReptilianMan October 3, 2016

Hussssin 

Hussssin is Canadian slang for cussing. Typically used in Northern Canada by teen's or adult's. Examples:

David: Man, Chris won't stop Hussssin.

Elijah: Yeah, i really wished he would tone down his Hussssing habits.

He was Hussssing at his friends.

Hussssin by Noodle4lyfe August 24, 2018

HISSS 

The act of making a wheezing noise while laughing.

"OMG! what you just said, made me laugh so hard i started HISSSing! HISSSSSSSS!"

HISSS by Rachael and Nicole. August 23, 2008

hissssssssssh 

Cross between a cat hissing and a fish, basically a fish hissing.

Me: walks up to fish tank
Fish: hissssssssssh
Me: *calls vet* Is that normal?
Vet: No bring ur fish 2 me immediately

Me: *brings fish 2 vet*
Vet: ur fish swallowed a cat we will do surgery
Me: so that explains why A. my cat disappeared and B. why my fish suddenly got so fat

hissssssssssh by bobthechez June 10, 2018

HISSSSSSSSSSS 

one of the many things shelby does to be annoying that we make fun of her with.

Mostly used with the \m/ hand gesture

"\m/ HISSSSSSSSSSSSSSS SSSSSSSSSSSSSSS SSSSSSSSSSS"

HISSSSSSSSSSS by Dillon October 10, 2004