Dried flattened pop that's been trapped between your
butt cheeks.
A frat boy called Crotch Waffle after the previously departed dude he reminded someone of, also named....Croth Waffle.
A sailor
unfortunate enough to mention to a shipmate he was called "Croth Waffle" in college. Not to worry though, it mercifully got shortened to "Hey, Crotch!"
Also...."
Uncle Wally"