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1.
Half erect penis
Seeing Britney Spears' tits gave me a half chub.
by imanadultnow March 27, 2004
 
2.
An inkling of an erection. 1/2 a chubby, therefore 1/4 a full erection.
When I'm in the same room as hott chixxx, I get a half-chub.
by Wellington November 08, 2005
 
3.
A half erect penis, either a result of being only partialy aroused, or being paranoid of being caught.
"So then she took off her pants and was about to start riding me, but then Steve came home, and we had to stop all of a sudden. After he left, we tried to get back into it, but my wang was freaked out, and I couldn't get it up past half-chub, so we just gave up."
by the mecca November 03, 2006
 
4.
since a chub is a full erection that is thick in girdth, but not proportionate in length; a "half chub" describes anything between flacid and an all out boner.
damn reg! that girl is fine.... i'm gettin a half-chub just lookin at her.
by alkatraz54 November 09, 2005
 
5.
Half chub is a conditon that effects the male population. Symptoms are mainly a slightly erect penis, not a full boner.
Oh My Jon has a half chub! What the heck is wrong with him i thought he would be the future bussiness leader of america, but the half chub interupted!
by Parkizzle September 02, 2005
 
6.
1. a penis that isnt quite erect yet
2. a penis so small that when erect, looks like half chub
Natalie... im srry to tell u this, but donny was standing behind you trying to hide his half chub!
by jeni525 October 08, 2006