I want to find a stereotypical looking nerdy man and get strangled by his nerd thighs
Why do you want to get with a nerd so bad?
He has to look nerdy and ordinary and I want him to smother me and get my heart and blood pumping really fast.
If you have a specific sexual fetish, it's okay to want to engage with it with another adult as long as they consent and the act does not harm either of you. Getting strangled by thighs could be dangerous if the other person doesn't know when to stop and so you should agree on using a safe word or other method to ensure that you don't get injured.
Nah I will be fine. He only needs to know how to please a girl.
Well, I mean, as long as they are consenting then I see no problem with it. You should explore and figure out what you are into.