I was watching the Messygirl video "Sorority Pie Hazing" and was delighted when Christina pies Tammy from behind, and a huge glob of pie cream backfires all over Christina. It was a delightful moment of genuine spontaneous and unexpected loss of dignity. Wam (and comedy) gold. Are there any other notable examples of accidental self messing like this?
Personally I think of accidental self pieings as when a girl unintentionally gets a whole pie to the face. Whether that be from someone tripping them into a pie, or them sneezing and the jerk reaction slams their face into a pie, or even if someone forces the person to slam a pie they are holding themself into their own face.
Splatter from a pie just seems like that, splatter, not a "pieing".
When I was a little younger, I build a spring loaded device to self-hit with pies. While I was working on it, loaded with a pie, it went off prematurely and smacked me just about square in the face. Startled the heck out of me, but if was pretty neat getting hit full force - harder than you can usually pie yourself, it felt like.