I'm a 50yo , bottom bi male. I have also PNP'd regularly over the last 26 years, and now I must confess.....
I get off the most when I turn someone into meth, doubly so if I can talk that boy or girl into letting me inject it for them. ( it's surprisingly easy, actually) Seeing them get their first rush and in a heightened state of horniness and their total loss of inhibition and good judgement gets me rock hard. Not to mention, they become much more mentally pliable.
The first time I did it at 25, the lady I was with ( a 40yr old biker chick named "Nazi") did that very same thing to me.
Twisted is as twisted does!😂