signs of trouble

on my way home today i saw two signs that were to me vaguely disturbing.

one was a plain black and white that said simply:

NO
SHIT

i have no idea what this was a reference to, nor any clue about its context.

and then i was passing through a town and i'm pretty sure there was a sign outside a church listing the time of the sunday service as being at 10:01.

huh?

weird.