If someone is born blind and has never had any form of sex what do they masturbate to?

[xxSangre_de_amorxx]

My question is that if someone is born blind and has never had any form of sex. Has never even kissed the sex that they are possibly attracted to, what do they masturbate to? Lets use a teenage boy for example. Lets say the sound of a feminine voice has lead him to be heterosexual. He has no clue what her body looks like. He has never touched her body. What does he have to go on? Random things like this pop into my head at times and I don't know any blind people to ask them. I am aware there is Blind "Porn" and yes a person whom has had sex can use their imagination but for someone whom has been celibate his/her whole life and is coming around to "that" age what turns them on?

Also when Deaf people have sex and live in an apartment building and they moan to an extreme level what do the neighbors do about it? They can't exactly Scream "Shut up!" or knock on the door to ask them to to keep it down. Do the neighbors simply grit their teeth and bare it?