1016584
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original
2010s
2017
2boys
anal
animated_skeleton
bed_sheet
bigger_dom
bigger_dom_smaller_sub
bigger_male
bigger_penetrating
bigger_penetrating_smaller
blue_blush
blue_cum
blue_hoodie
blue_jacket
blue_penis
blush
bottom_sans
bottomless
brother
brother/brother
brother_and_brother
brother_penetrating_brother
brothers
closed_eyes
clothed
cum
cum_on_face
cum_on_self
duo
ectopenis
fingers_interlocked
fontcest
from_front_position
gay
gay_sex
gloves
grabbing_sheets
gripping_sheets
hooded_jacket
hoodie
incest
indoors
interlocked_fingers
intertwined_fingers
intraspecies
larger_male
larger_penetrating
larger_penetrating_smaller
male
male/male
male_only
male_penetrated
male_penetrating
male_penetrating_male
missionary_position
mmmemmo
monster
monster_boy
orange_blush
papyrus
papyrus_(undertale)
papysans
penetration
penis
red_gloves
sans
sans_(undertale)
seme_papyrus
sequence
sequential
sequential_art
sequential_set
sex
sibling_incest
siblings
skeleton
small_sub
small_sub_big_dom
smaller_male
smaller_penetrated
smaller_sub
smaller_sub_bigger_dom
sweat
tears
top_papyrus
uke_sans
undead
undertale
undertale_(series)
visible_breath
yaoi
tags