Michael Oliver's Filthy Underwear?

I heard that Michael Oliver sometimes shits his pants during concerts for The Samples, and that is why his balls and ass can usually be smelled from 10+ feet away. This isn't surprising because the small venues at which the The Samples play often probably cannot afford indoor plumbing and a long line forms at the outhouse/hole in the ground in the back parking lot where people go to the bathroom. Oliver probably does his best to hold it in until he's finally at the bathroom, but he's only human, and God knows that Taco Bell can create a massive diarrhea release within hours of being eaten!

I heard a rumor that underwear in the image on the left is actually Michael's and was taken after he returned from a tour for The Samples. Apparently he wore this crusty underwear for two weeks straight! Does anyone know if this is true and/or have any additional details? Also, does anyone know what he ate before soiling his underwear?