look up any word, like blumpkin:
 
1.
To be extremely drunk
Dude I was hammer drunk the other night, and when I got up I couldn't remember anything about it.
by nexgen January 01, 2008
 
2.
When you are completly hammerd and partying hard.
Man, we were hammerdrunk at that party last night
by Trent Mcdermott May 04, 2007