Because, this image:
I hereby announce the bLA Graffiti Grammar Bingo & Bee. Once I post five of these, the first commenter gets a prize if they type BINGO!!!! and then identify the error. (Exclamation points not required.)
Obviously, this one should be “you’re,” and I also deduct points because the elephant appears to be both balancing on a ball and levitating to paint the sign. You can’t do both, Jumbo. I know these things.
I welcome submissions. Ping me at the address on my profile to send me one.