a level of inebriation that extends well beyond that described as "shitfaced," such that bowel control is lost. Typically achieved by drinking on an
empty stomach. The exact Blood Alcohol Content required to reach "shitpantsed"
drunk is different for each
set of bowels.
Cole didn't eat before going to open bar, and wouldn't you know he ended up shitpantsed in the bathtub.
Carl wanted to
show everyone he could loosen up, but he'll
never live down getting shitpantsed in
front of everyone at the holiday party.