(adjective) 1. Tired, sleepy, unable to carry on.
etymology- Thought to have first been used during the Dark Ages. Upon surviving an attack from a fire breathing lizard, the last image you would witness before passing out from lack of blood and multiple contusions would be the "Dragon's ass", as it flew away into the night.
Man, I just got done fighting wizards and goblins and I am draggin ass.
1. Tired. 2. As if to be so tired that one's own ass is a burden to carry.
Ex. It's two o'clock, if I don't get some sleep I'm going to be draggin ass tomorrow at work.