Rule34.GG

Regular 6boys
audience
bondage
clark kent
dc
dc comics
defeated hero
erection
experiment
gay
goggles
hair
herosub
jotto
kal-el
labcoat
lecture
machine
male
male only
male urethral insertion
malesub
milking machine
muscles
muscular
muscular male
penile insertion
penile urethral insertion
penis
penis milking
penis milking machine
restrained
science
scientist
superman
superman (clark kent)
superman (series)
uncensored
urethral
urethral insertion
yaoi