How do you ask your friend to experiment homosexuality with you?

You just ask him. Understand he may not want to and you may loose a friend. He may tell others of your desire. Are you ready to deal with that if it happens ? You can just ask if he has ever wondered what it would be like or you can just throw the idea out in conversation that you wonder what it would be like and see if he picks up on it. Most guys have some experience with same sex at some point in there lives. It's really no big deal, but a lot of people make it one.