Bad deed occuring when a pair of pants, usually slacks, get ripped in public, causing embarassment and dismay.
Dan:"I went out to buy lunch and wondered why everyone on the street was staring at my butt then I get home and oh. oh no."
Phil: "That's a very bad slackcident!"
I was walking pass my kitchen, minding my own business when I slipped and fell with my open mouth into box of donuts.
Tim, "where's my donuts?"
Monika, " I had a little snackcident "