This past weekend some friends had a Pimps and Ho's party that I declined to attend and a male friend offered to treat me to dinner, later saying something like, "If I pay for dinner, you'll put out?" I was pissed. He apologized profusely, saying it really was a joke and that he kids like that with other women (some of whom I know).
And there you have it: commerce.
(A lot of times, I edit out (meaning never write about) such foolishness, but I think you're grown enough to handle it.)