Anal Centipede

I line of people standing, a person at the front takes a penis in the butthole, and then the person doing that takes a penis in the butthole, and then so on it goes to the end, where that man gets a jolly time and doesn't get penetrated.

Derek - "Me and the boys were doing the Anal Centipede the other night"
Phil - "Where were you? Front, middle or back?"
Derek - "Middle, you know me. Action on both ends"
Dave - "What the fuck? Are you a homosexual?"
Derek - "Of course not, I'm a homiesexual"