cusp 

A term used to describe the edge or brink of something. Used very often when describing where something lies and/or is near.

My golf ball is on the cusp of the green!
that wonderful business man is on the cusp of success.

cusp by cleverman November 3, 2012

cusp 

in and of or around the brown eye of your butthole, the circular lemon-sucked area surrounding it is the Cusp.Literally the Cusp of your poopshoot! Usually used to degrade woman by having them commit a sexual act off of it.

"I made that bitch eat A FRIED egg off of my Cusp! Everytime I farted that white yolk flapped on the CUSP!

cusp by Pepe305 September 8, 2006

cusp 

Meaning highest point or pinnacle in traditional English language. Also used commonly by those suffering from severe, delusional, narcissistic, psychosis!

"I am a chicken!...I am the king of the world!...I am the cusp!"

cusp by Supras R Weak November 8, 2005

cusp 

used to describe the brim of a solo cup while playing beer pong. it can also be used as a distraction word referred to the origional defination of a butthole.

"right off the fucking cusp!"

cusp by thematster1 August 20, 2008

cusp 

A word defined crudely by a couple of high school students bored in AP Calculus. To cusp someone is to participate in a sexual fantasy in that persons mind.

I cusped your mom. (I participated in a sexual fantasy in your mother's mind)

cusp by Some Transmitted Disease November 30, 2004

Cusp 

Cusp is when your on the verge or doing something good but really can’t be bothered because you think you know it all.

Max was on the cusp of doing a full hours work, but decided to lay on the floor instead.

Cusp by Imcalledal September 4, 2021

cusp mustard 

the state of which the cusp of your penis discharges a substance that resembles the tase and texture of mustard.

shanon walked into the room and proceeded to tell us about the nasty cusp mustard on her boyfreinds dick.

cusp mustard by schmibones August 4, 2009