When you are out somewhere and you have to take a crap reallybad but you think you can make it home. While driving home you hit a bump and explode in your pants. This is a crapcident.
I was rushing to the toilet but did not make it and had a crapcident in my shorts.
A CAPsident occurs when you are typing on a keyboard (usually when you are just getting used to a new one) and you unintentionally hit the Caps Lock key.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.