Rule34.GG

Regular alien
anal
anal sex
ass
black hair
clothing
cum
cum from ass
cum in ass
cum inside
cum on penis
dib
green skin
hair
human
interspecies
invader zim
irken
legwear
male
mammal
one eye closed
open mouth
pants
penetration
penis
red eyes
simple background
smooth skin
space-tanuki (artist)
stockings
tapering penis
tongue
tongue out
traditional media (artwork)
white background
yaoi
zim