Yes, if you mean gay as in happy, but only for a limited amount of time. Methamphetamine is also described as giving the user a euphoric feeling. See related link for the risks and effects of taking meth.
In regards to sexual orientation - NO - meth does not make you gay. In my personal experience, I've noticed that if someone already has homosexual tendencies, they might be more likely to act on them when they're using meth. But meth cannot create homosexual thoughts or ideas, they were there long before the meth came into the picture.
No, meth will make you test positive for meth.
The vast majority of gay people do not do crystal meth. Only a few people (gay and straight) do crystal meth, because they make bad choices.
Meth and marijuana
It is a term for a place where people make meth.
How to make meth the cold
no
You don't. First, meth is an amphetamine. If you are referring to amphetamine as in Adderall, you can't make meth out of that.
Doing meth usually does it.
Make meth
Yes.
You can not legally make meth, it is an illegal substance. Answer. Or you can call your local police station and see if they have any tips for making legal meth.
When mixed properly with a few other componets, yes it does make a form of meth.