I think your kink is fairly common. Whatever you are is ok - who cares. Just because you like this doesn't mean you are gay (not that being gay is a bad thing). You would know if you were gay, because you would be sexually attracted to men. If you aren't sexually attracted to ment then you aren't gay. In the comments section of this website (below) there are many comments from people who share your kink:
http://www.bigsextoystore.com/cgi-bi...ildos&start=20
I think most who post on the site are gay, but many of the non-gay guys who post comments say "I tried it on my wife and she really loved it, and then she gave it to me for an hour and it was awesome, etc."