Rule34.GG

Regular 1animal
2boys
anal penetration
anal sex
beastiality
blue fur
bottomless
brown hair
closed eyes
dr heinz doofenshmirtz
erection
exposed nipple
gay
hansom cab
hat
human
interspecies
legs held open
legs up
looking at viewer
male
male only
mammal
monotreme
multiple males
open shirt
perry the platypus
phineas and ferb
platypus
rickshaw
rickshaw
spread legs
sweatband
tripperfunster
yaoi
zoophilia