Average guy with a bizarre affinity for poo-talk. Also known to enjoy farting in the car (with the windows locked from being opened by potential victims in the passenger seat), under the covers, on the way out of elevators, and probably just about anywhere else where a good load of butt-fumes can lead to a lot of laughs.
Just make sure it's not one of those cheap things with an under-sized poo passage.
Found a link on liquidass.com. By the way, that stuff is HILAROUS! Buy some and take it to your local indoor shopping mall. A dark store like Spencer Gifts is ideal, where you can discreetly put a few squirts of the stuff airborne and then bite your lip (HARD!) as people begin to notice the effects!!