How rats mate

In a rat, there's a mating ritual,' says Palatin's CEO Carl Spana. 'The female rat will approach the male head-to-head. She will wiggle her ears, she will wiggle her whiskers, she will nibble at him, and finally she'll turn and run away.' If the male chooses not to pursue her, she may return and, as one leading rat sexologist puts it, 'kick him in the face'. This tends to do the trick.

I think I saw that happen at a bar once. Although I don't know she wanted the fella to follow her…