Here's part of a fun story.
One of my friends got a client who was the owner of a large black club in Chicago. The owner gave my friend (and his friends, so u) VIP access for free one night, and comped bottle service. When our group walked in (all white, an Asian, and an Indian), many hilarious things happened. But related to what you're talking about:
My friend (white guy) goes out to dance with my gf at the time (the Indian chick) and they're getting down on the dance floor. A black chick comes up to my gf on the dance floor and goes "is dat yo man?"
My gf is like "nope, he's all yours!"
So the black chick gets in between them and starts getting down with my buddy, and my gf came back to our table in tears from laughter.
Then my friend, who was into black chicks at the time, came back a bit later looking like a little kid on Christmas morning and was like "I danced with a black chick!"
Anyway, that's what I thought of when I read your pickup line, so there may be some truth in it.