look up any word, like cunt:
 
1.
The white lady, rootsky tootsky's, gaggers, cocaine, nose candy, sniffers, lines
We made the call to get some blasties, then we were up for 2 days
by LV2398 August 12, 2012
 
2.
a combination of the words "black" and "nasty"
I went to McDonalds and this nigga standing in front of me smelled blasty as hell.
by epiicisfail April 07, 2011
 
3.
a nasty blowjob. one that leaves a mess of saliva, usually the result of heavy deep throating.
my girlfriend got on her knees and gave me one hell of a blasty last night!
by captain corndog36 March 27, 2011