Where would you hear “strike her with your dong”

A conductor at a youth orchestra rehearsal, who has flown in from abroad and doesn't speak very good English.

In a mortal combat themed porno

Nowhere.

If I was a Russian in ww2 going house to house drunk raping women with other soldiers. Its the only time in history youd hear that. It even sounds like something a russian would say.

That sounds like something one of my best friends would say. Jokingly, cause I doubt he's stupid enough to actually dick-slap a woman.

The phrase to me sounds like some really shitty dare.