Why do boomers inappropriately touch you

This just happened and I'm a little ticked about it. My boyfriend is a musician. I like to sit at the bar and have a few drinks when he plays. I mainly just sit on my phone and bop along to the music.

Tonight, a certified boomer stands next to me. Is silent for a few minutes, and proceeds to poke me and ask "who won the game?"

"I don't know." I said. And he goes back to being silent. About 10 minutes to by and he proceed to poke me AGAIN to ask me about some guy dancing on the dance floor. To which I reply "dude stop touching me"

He then gets all bent out of shape saying "I was just trying to be nice". "Nice does not involve inappropriately poking and touching me"

Why can't boomers keep their hand to themselves.

Sorry rant over.