You are walking along the street and pass a woman. Suddenly, she stumbles over a discarded beer can and begins to tumble. In her panicked attempt to avoid falling over she grabbed your arm and accidentally hits you with it, hard.

"Oh!" She regained her balance and awkwardly added "Bruh, why are you hitting yourself?" probably to make light of the situation.

It seems that she regretted that choice of words, as her eyes widened and she covered her mouth with her hands.