How do you call your functions?

A) poststupidshit
B) post_stupid_shit
C) PostStupidShit
D) postStupidShit
E) pss lol
etc

I call them like PostStupidShit or XXX_PostStupidShit where XXX is a module's short name.

I call them according to the establised conventions of the language I use and the project I participate in.