When a guy spanks or slaps another person with semen on his hand - i.e. just after masturbating.
This is a generally condescending move on par with tea-bagging, and - if executed properly - causes considerable distress on the recipient's end. Do not attempt this on someone that is physically stronger than you because they will perceive it as a sign of great disrespect.
"John was being a real douche last night, so I jerked it to a picture of his girlfriend and then spunked him in his sleep."
A person who is perpetually sending/reading text messages, such to the effect that their behavior is considered rude and/or anti-social. This term is generally used condescendingly, or at least with some degree of disdain.
"Scott sure is being a buzzkill tonight - he hasn't looked up from his Blackberry once since he got here."
"Yeah, talk about a textasaurus rex."