Someone altered that table sign, it was 666 but they removed one of the 6’s, bent the sign and turned the it upside down - Presto 99.
The real picture, not shown, is that mac daddy is waving at himself in a mirror.
Old guy behind him is thinking, “What the F is this moron waving at there is nobody else here”.
Why are the diners in the background fawning all over him? If I’d been in that photo, I’d have taken full advantage of it by scowling and/or holding up a sign.