[Macrinus]

Anyone dumb enough to hold that sign isn’t smart enough to have spelled all the words on it.

[Phyllis1]

Is that sign for real or a joke?

[Fiddlstix]

There are several stories out there concerning that picture. Everything from "it's a photoshop" to "it's real but a prank".

I have no idea about the true story of the pic but I do like the message.
Considering the days we now live in it could easily be the real McCoy though.

[piasa]

Maybe he’s thinking “Anyone dumb enough not to recognize sarcasm when he reads it....”