Someone who is not cool or up with the times,usually a 18-25 yr old male that is still a virgin but still talks about whacking it everynite cause he's clueless on how to nail some snatch!
That dude chris is such a pudwhacker,he couldn't get laid in a 10.00 whore house!
Originally used to degrade chonic masturbaters, pudwhacker is most commonly used in negative connotation in regards to one's skill, ability, or intellegence. See also: fucktard