When an idiot decides that riding his or her crotch rocket wearing only shorts and flip flops is a good idea and the subsequent aftermath of the 100MPH crash he will most likely get into.
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COP1: "Dude this motorcycle crash is horrible."
COP2: "No shit! Check out this Kawameatrail. It has to be at least 300 yards long."
COP1: "Is that a toe?"
COP2: "No it looks like an earlobe or nipple."
COP1: "I'll get a mop and bucket."
COP2: "It'll take forever to clean up this Kawameatrail."
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.