When you just finished writing a paper and you haven't had time to edit or spell check. Typically written the night before it is due. This isn't a paper that you want to hand in but it will give you something to turn in to your teacher.
3:45am:
Dude 1: Oh man I just finished my research paper. Thank God!
Dude 2: Nice how is it?
Dude 1: Well, it's handinable.
Dude 2: Good luck with that haha!
this resulted from a mispronouncation of finger handle bars, which is like a finerstache, only you get hand bars, instead of a moustache. After much debate, the group of new words (websters) decided it was a piercing that people got that involved piercing large rings through both testicles so your girlfriend/boyfriend/etc. could handle you by them.
Bob: Dude, did you hear Josh got him some Finger Handlebars?