That doesn't sound like a good idea to me :/ I think you should talk to a doctor about it, because any DIY type stuff could really, really mess up your stuff. Sometimes it's a little too easy to accept risk when you want something really badly...but changing your body is not necessarily the best time to take big risks.
Maybe an endocrynologist can put you on very toned-down testosterone blockers? But I don't know how that would effect your libido, ability to get an erection, etc... and you could become infertile. The best thing would be to talk to a doctor!
But don't put vaginal tightening cream on your dick...that just sounds like an awful time. :3
Your straight! and want to reduce the size of your willy? what size is it? It's rumoured that if you rub the end with tabasco sauce, it does tend to shrivel it up a bit, not sure how true or effective that would be.
,
LOL, how would you feel if you had a realy small willy? your the third person this year who has asked that question, be happy I am sure there are lots of girls who would appreciate a realy nice guy with a decent sized willy. Obviously if you go the hormone route, you will eventually have trouble getting erections, perhaps a loss of libido, and it won't shrink that much. just be a flacid lump of useless meat.
Are we allowed to ask why you want to do this?
xx