Hard-On

An erect penis.
see also boner,stiffy etc.

'When Bob saw Jenny by the pool in her bikini he got a big Hard-On'
'When my dog licks my balls i get a Hard-On'

by Disturbed1 November 23, 2003

hard-on

Man's most magnificently majestic manifestation of masculinity, and the one potentially most exciting to a woman. It looks like a rocket ready to be launched, and has the same turbulent thrusting force and energy.
It signals to a woman that a guy is ready and able to have sex with her and eager to do so, which, if she finds him attractive, tends to kindle her interest. For that reason, it is a serious though common mistake for a guy to be embarrassed or self-conscious when he has an erection.

Freshman year, after pulling an all-nighter, I stripped and got in bed, only to wake a half hour later with an urgent need to piss. I got up without waking enough to know I was naked, much less that I had wood, and walked down the hall to the bathroom. Only as I walked past the open door of another room down the hall and saw a woman grad student staring at me with wide eyes did I look down and see I was sporting the most giant hard-on I'd ever seen in my life. Afterwards, she kidded a male grad student we were both friends with that I had a better body than he did. He replied, "You've seen more of it than I have."

by Adam Phillips August 18, 2006

Hard-on

when the cock sticks out, causing a bulge in the front of a mans jeans. best way to get rid of it is wanking. very embarassng in public. happens often to teenage boys when they see a chic. the erection of the penis. it gets larger, hard, and sticks out.

OMG! i've got a massive hard-on.
everyone saw jay's hard-on in gym yesterday.

by Super hard cock 99 November 28, 2006

hard-on

an erected penis (boner, stiffy, chubby)

When she comes over to me, i get a hard on and it dont stop till tomorrow one of these days im gonna cum, IN MAH PANTS

by KawaiiAnime November 22, 2003

hard-on

An erect penis

Tied naked to the bed, the evil Wicked Wanda gazed down on the captive, Agent Long with an evil smirk, as she fondled and squeezed his gargantuan hard-on.

by barefeet98 March 31, 2009

hard-on

(alternate spelling of hardon)
1. An erection
2. A problem
Although definition 1 is far more common, 2 is occasionally used. It is used with "for", as in "Having a hard-on for..." It implies an unhealthy fixation, and it is pejorative, in that (obviously) it implies a homoerotic obsession.

Ever since I got Jim fired, he's had a real hard-on for me.
Stop picking on him! Why do you have such a hard-on for him anyway, dude?

by ThisIsAmir August 16, 2004

hard-on

1. a erection of the penis

2. a stubborn and severe person

His hard-on drew unwanted attention from his students.

by The Return of Light Joker May 21, 2009