hard on 

Erect penis; see: boner

Long Dong Silver could never get a real hard on, because his penis was so long.

hard on by Jorge December 6, 2002

Hard On 

When the penis is aroused and expands to it's full length

Kiersten : Mmmmmmmm! Mmmmmmmm!
Chad : Mmmmmmmmm! Mmmmmmmm!
Kiersten : I do love kissing you Chad and it makes you get A Hard On would you like a blowjob?
Chad : Yes Please!
Chad : Ahhhhhhhhhhhhhhhhhh! Ahhhhhhhhhhhhhhhhh! Ahhhhhhhhhhhhhhhh!
Chad : You know this reminds me of the other day when me and Jim were kissing we got Hard On's and took turns sucking each other's dicks!
Kiersten : Reallly I just gave you an amazing blowjob and your going to talk about your gay experience with Jim.
Chad : I'm not gay I'm bicurious!
Kiersten : Well sounds like your gay to me!
Chad : I gotta go Jim want's me to take A shower with him!
Kiersten : GAY!
Chad: Bicurious!

Hard On by SlopNChop March 7, 2017

hard on 

An erection of the penile variety. Can i say erection on the internet?

Oi, cowboy from the village people! Did the leather man give you a hard on?

hard on by Tom Brownlee July 29, 2003

hard on 

1. An erect penis.
2. A contemptible person.

Why you fuckin' hard on!! I'll fuckin' Carlton Fisk ya fuckin' head with a Lousiville fuckin' sluggah!!

hard on by Qbert July 30, 2004

hard on 

having a great like toward something, esp. getting off because of this thing.

My stupid-ass ex-boyfriend has a freaking hard on for making people as miserable as he is.

hard on by Lauren February 8, 2003

hard on 

The uncontrolable urge to get even with someone.

You better watch your step, that guy has a hard on for you.

hard on by Mark Axton February 22, 2004

hard on 

Threatening, angry, accusatory, entitled and generally mean spirited person usually found inhabiting the blue-collar netherworlds of Long Island and New Jersey (and probably Florida). Union laborers, store owners, police, bosses, government workers, toll booth clerks...usually anyone in a position of power or who controls the actions of others, no matter how minimally, and their tendencies to take out their frustrations with the world on their fellow human beings in a nasty, accusatory, judgemental, vindictive and sometimes violent way. Usually used by people guilty of this trait themselves, as they navigate their sad lives through the sea of like-minded Hard On's they have to interact with daily. Probably derived from the usage of Hard On as penile erection, and the need to gain immediate physical relief from it's urgency in a male, powerful and imposing way.

"Be careful with Rocco at the plumbing supply place, he's a fu**ing Hard On"

"I wouldn't mind scrubbing these toilets if the boss wasn't such a Hard On"

"I know I'm guilty of drunk driving, but that Judge who sentenced me was a real Hard On"

hard on by Jesco August 7, 2005