If your wife was having health and personal problems and a guy was up on stage mocking her..

Not slap, but stand up and ask them to be more respectful.

Yes,and give him a few kicks too like Chuck Norris 😐

I would buy a TASER gun for her

So he wants to defend her even though he cheats

I would attempt to

no. I'd hunt him down backstage.

I heard a guy pray , " Lord, I was once young and you took that from me, I was once handsome and you have taken that from me. Lord , in case you've forgotten, I've been married a long time now too." 😂

If the guy mocking her is Chuck Norris, then noooo...

He would deserve it, but the rules of our society dictate other courses if action

Leave and get a refund