semi-boner 

When ones penis is no longer erect, possibly either after blowing ones load, or just losing an erection. A semi-boner is often used for playfully slapping ones friends in the face while they sleep for a hilariously good time.

To try and piss my friend off, I got a semi-boner and helicoptered it around in his face.

semi-boner by BLICK12 May 4, 2006

Semi-boner 

A semi-boner is when a man's penis is no longer erect after blowing his load or just becoming aroused.

Some guys get a semi-boner to playfuly slap each other in the face with it.

Semi-boner by Tiea September 28, 2008

semi boner 

when the tip of your cock is floppy but the rest is as hard as a brick.

omg tommy you have a semi boner.

semi boner by tommysucks February 19, 2017

semi boner 

When your erection is only semi, it does not go all the way. This is actually more embaressing than a true boner because people think you 'cannot get it up'

HAHHAHAHA LOOK PHIL HAS A SEMI BONER OVER CHARLOTTE!
ITS PROBABLY OVER JOHNNY CAUSE ONLY HOMOS GET SEMI BONERS!

semi boner by chloerose444 October 9, 2008

semi lady boner 

When the female can feel the moisture coming to their vagina.

“I saw Matt Damon and got a semi lady boner.”

semi lady boner by Cabbin February 12, 2018

semiboned

One of those annoying partial erections. Not quite hard enough to masturbate with, but hard enough to be seen by people if you stand up. They're also rather difficult to get rid of, because by the time you get one you want to get the rest of the erection.

Jason: brb getting milk -gets up-
Mom: You're semiboned, son. I don't need to see that.
Jason: -.-

semiboned by Niggadicks July 4, 2006