Combination of the words "hammered", "shit-faced", and "wasted". Used to describe a state of intense drunken-ness, usually accompanied by asinine behavior.
Dude, I had a terrible week. I can't wait to get hammerfasted and embarrass myself tonight.
Madepopular in the youtube sensation "Drinking Out of Cups," Johnny Hammersticks is someone who is hammerin' away like he's fuckin Tommy Noble, a famous boxer.
A: Heard you guys havin sex last night.
B: Yeah I was hammerin' away like Johnny Hammersticks.
A: Got it goin like Tommy Noble or somethin.