I never tried this but if you stick your finger up your butt does that make you gay? I know people say it is because it's in your butt. Is it also a sin to give yourself a blowjob or stick your finger up your butt to the point of orgasm?
Homosexuality is when two people of the same gender have sex with each other. Usually that involves masturbating other with the hands, oral sex, or anal sex because with two men there is no place for the penis to go. These types of sexual actions are wrong because they are being done with another of the same gender. "For this reason God gave them up to vile passions. For even their women exchanged the natural use for what is against nature. Likewise also the men, leaving the natural use of the woman, burned in their lust for one another, men with men committing what is shameful, and receiving in themselves the penalty of their error which was due" (Romans 1:26-27). These things are also wrong if done between unmarried men and women because they are sexual actions being done outside of marriage.
Most men are not flexible enough to get their penis into their own mouth. While there is nothing in the Scriptures saying specifically that it is wrong, there are somethings you should be concerned about. Your penis is not germ free. It stays most of the time in a warm, moist environment that can be the breeding ground for germs. And then you want to stick this in your mouth? It may not cause problems, but it isn't sanitary. Also consider that the skin of your penis is thin and your teeth are sharp. It is possible to give yourself small scratches that will allow germs to enter.
In reaching orgasm, muscles around the ejaculatory duct apply increasing pressure until the intensity reaches the point to cause orgasm and with it, ejaculation. The ejaculatory duct is next to the prostate gland. Both of these are close to the rectum inside your body. People have figured out that you can put pressure on the prostate through the rectum to speed up the process of reaching orgasm. But there are numerous problems:
- The anus has a set of muscles round the exit to keep your bowel movements from coming out at the wrong time. These muscles can be injured or damage if something forces the anus open.
- The bowels are notorious for harboring all sorts of disease causing bacteria.
- The lining of the rectum is thin. Scratches can easily allow bacteria into the blood stream.
- You can easily scratch yourself internally with your fingernail.
Men have no problems reaching orgasm through regular means. There is no reason to add additional risks.