What not to do with your billboard. The case of Samsung

This poster is not from somebody's bedroom wall.

I am not sure whether this is an intentional mistake or just a pure blunder.

Hey @SamsungMobile, don't you have someone to proofread your ads before they're put up? (via @ScissorTongue) pic.twitter.com/AqLZkHFCjp
— Nigel Britto (@NigelBritto) November 25, 2013