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1.
A variant of stanker. A pungent, deadly, and sometimes carcinigous aroma that rips out of ones anus with deadly velocity. Alerts all to its danger through a noise similar to a fart, but has the potential to cause cartilage damage and/or leaks.
Whoa, did you hear that stank bomb? Better get out quick, this rooms gonna smell like raw ASS!!!
by Webster Strikes Again, BIATCH January 02, 2005
 
2.
Really good and stinky weed in a cigar or blunt. It is called stank bomb since normally, stronger weed gives off a more intense odor than swag.
Joe: "Dude, come blaze this stank bomb witcha boy!"

Me: "Ok, hell yeah!"
by D0p3b0yfr3sh February 26, 2013