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1.
A hot blast is during a threesome, while one chick is sucking your dick, and the other is eating your butthole, you cum and fart at the same time.
Example 1:
Last night I had one girl blowing me, and other giving me a rim job. I gave those bitches a hot blast.

Example 2:
I was at Myrtle Beach during Senior Week and gave two bitches a hot blast.

Example 3:
I was so blacked out during that threesome that I gave those two sorority girls a hot blast.

Example 4:
There is nothing better than while getting your dick sucked and butthole eaten, giving a hot blast.
by Buckhannon's Best April 25, 2013