Dude back there knows exactly what is happening and is pissed he is on the wrong side of it.
He is not pissed - he is contemplating to ask the woman on his table to do the same for him (you can see her on the right munching on some food). In fact he is happy he got an inspiration for their night out.
I wish them all a lot of fun. And by the way: That young woman in the front really has a contagious smile and some very nice titties. Enjoy!