Tags:
16:9
2d (artwork)
3d (artwork)
3gub
absurd res
anthro
asriel dreemurr
asriel dreemurr (god form)
ass
big butt
detailed background
digital media (artwork)
erection
genitals
hi res
imageboard
lying
male
monster energy
on back
penis
Rule34
solo
tagme
thick thighs
undertale
undertale (series)
white body
white penis
wide hips
widescreen