1 definition by TheGreenFox

Top Definition
The stage where a males phallic organ is enlarged to halfway "there" but not finished. Handy when diving into pools with loose pants or being pantsed in public.
Jessica Alba announced she will appear topless in her next film; I for one already have a semilobon.
by TheGreenFox July 27, 2008

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.