This sign was in the window of a Optician's Office in Auburn, California next to where my family and I stopped for lunch Monday on our way back home from Lake Tahoe.

Hummm!
Nothin' like a little proof reading
I'll have to take a picture of this sign that is on the Santa Clara English department's building. It has all kinds of incorrect grammar.
I know people that can't get Labor Day and Memorial Day straight to save their lives.
Say it with me "Memorial is in May"