Rule34.GG

Copyright mario (series)
nintendo
Regular 1other
2boys
ambiguous gender
animated
anthro
balls
bara
bowser
collar
digital media (artwork)
duo
erection
fellatio
gay
genitals
gif
hair
hints0
horn
human
human on anthro
interspecies
koopa
male
male/male
male only
male penetrating
mammal
muscular
muscular male
navel
nude
oral
penetration
penile
penis
pixel (artwork)
pixel animation
scalie
sex
simple background
slightly chubby
video games
yaoi