That's the very definition of FAFO.
Slapping a dude 2x your size is stupid, no matter who you are.
Discussion
She is lucky dude does not know how to punch.
Yes. But she's never going to overcome that kind of physical difference. And she's lucky that's not me. I throat punch and then break limbs.
And then, obviously:
It'll still hurt even if she ain't got nuts. Lol!
(But seriously, I haven't ever raised my hand in anger towards a woman and it would have to be a really bad set of circumstances for me to do so.)