An erectionist
That behavior might be classified as autochorissexual, which is a term used to describe sexual arousal or satisfaction from the idea of being oneself.
A septuagenarian.
You can call anyone who has lived 100 years a Centenarian.
Someone who is in their 80's is commonly referred to as an octogenarian.
a = septuagenarian -a person between the age of 70 and 80. = a douch
You call a hundred years a century. If someone lives to one hundred years, that is considered to be quite an achievement.
you call them transgender
Paranoid.
biologist
patriot
Phylomath
Logophile
Patriot.
A boylover
A nerd
sellotapist
A Lush.
Aquaphile