Goatfell - Here is another meaningless thing that people say when they stub their toe:

"Son of a bitch!!!" (has no bearing whatsoever on the real matter at hand...a stubbed toe and an inanimate object)

Should we worry about this or try to get people to stop doing it because it makes no sense?

No. ;-) They're already upset. Let them say whatever the heck they want to in moments of stress, and leave them alone.