Green Balls 

When a completely straight guy gets involuntarily aroused by another guy (not necessarily lustfully, simply arousal). A very awkward situation. Green balls cannot happen to a gay dude. One must be straight in order to get green balls.

"Jeff got green balls when Nathan reached over his lap to grab his soda."

Green Balls by Aprice January 14, 2008

shit-balls 

When you wipe from back to front and you go forward a little to far.
also an exlimation of sumething that surpises or distresses you

dude i just got done taking a dump and i think i have some shit-balls
or
oh shit-balls i forgot to do my homework

shit-balls by dannyofborg October 19, 2008

Munchkin Balls

-noun
Testicles that are significantly smaller than those of an average sized man's testicles.

Wow, Jim passed out after two beers. He must have munchkin balls.

Munchkin Balls by RM Sue January 10, 2009

Pendulum Balls 

The term for a saggy pair of balls that belong to a gentlemen of the older age set. Normally accompanying a broom dick.

Old guy "Man my balls are starting to really sag"

Young guy" HAHA! You have pendulum balls!"

Pendulum Balls by BROOM DICK TITS! December 8, 2010

smacking balls

when you are so bored at home that smacking your own balls would be considered fun

Dude1: hey man what r u doing?
Dude2: nothing much bro just smacking balls
Dude1: that bored hey? come out tonight if you want

abbreviation: smackin balls

smacking balls by Elselvor July 11, 2012

Hard Balls 

To have Hard Balls , these can be hard as a rock or just harder than usual, usually when in the cold.

It can also refer to someone who does not feel the pain of being hit in the balls, they may have no feeling , or can just tough it out.

Jack - "God I went to the pool and came out with hard balls"

Blake - " I know what You Mean"

Or

Jack - "Jeez, that guy didn't even flinch"

Blake - " Must have Hard Balls"

Hard Balls by Le onion November 16, 2015

Blue Balls 

When you want some pussy but cant get any.

This story is giving me Blue Balls

Blue Balls by TheDrunkenFROG January 18, 2017