Pet Peeves

I saw a note posted at a register in a restaurant the other day. I see these a lot - and it's one of my pet peeves. (I'm sure you have some, too.)
"We do not except checks!"
"Except," instead of "accept."
They are actually saying the opposite of what they mean to say.
It's kind of like when people say (I hear this often), "I could care less," when they mean, "I couldn't care less."