Viagra & Saltpeter-gasm
A Viagra & Saltpeter-gasm is the orgasm a guy has after he eats food laced with Viagra and Saltpeter -- he has cumgasms and shits his pants simultaneously.
Aww man ... somebody put Viagra and Saltpeter in our food, and I had a Viagra & Saltpeter-gasm -- I was cumming and going at the same time!