So, these two guys are carpooling home from work one day. Traffic is barely crawling along and they are both a bit bored. So the driver is looking around and suddenly he points at two dogs having sex in someone's front lawn.

-- Look! What are the those dogs doing? Are they fighting?

The passenger, being a man of the world, replies,

-- They are having sex. Don't tell me that you have never had sex doggie style before?

The driver, a bit shy and nervous, admits that he has never had sex doggie style. So the passenger says,

-- You have to try it. Its pretty cool. Here's what you do. Tonight when you get home, fix your wife a margarita and then suggest that you want to try this new sexual position.

The driver thinks a bit and then decides he will give it a try.

So the next morning, the two commuters are back in the car and the passenger asks,

-- Well. How did it go?

-- It was great. But it took me 6 Margaritas just to get her in the front lawn.