Hank and Jan would be Hank Pym and Jan (the Wasp). Decades ago, he hit her while having a mental breakdown and it's providing a lot of fodder ever since.
There is much less stigma attached to a woman hitting a man; it's part of a general attitude that men don't really feel pain or take damage from blows. You see it a lot in media, especially movies and TV shows where a woman can kick a man in the crotch (if he just says something he doesn't like) and it's seen as hilarious but if he grabs her arm, he deserves to be beat up.
It's a twisted convention I find very revealing about society.