Anytime someone makes a jackass of themselves (by saying or doing something really stupid) and is caught red-handed and told off by either friends or coworkers = "kicked in the shit".
Person 1 = "i want to fuck a fat bitch tonight"
Person 2 = "why don't you fuck your sister, or ain't she fat enough?"
Person 3 to Person 1 = "oh snap, you just got kicked in the shit"
To takepart in sexual activities in the backseat of a car that is being driven by someone without them knowing of the activities occurring in the backseat.
I hate it when my friend and his girlfriend are kickin' it in the back seat. I wasn't expecting to see that in the rear view mirror.