There's a lot of these tags, so thought I'd try to sort them a bit.
I think that messy_diaper should be changed to include urine, not just feces, then have these implications:
Then these tags should imply diaper:
diaper_change
diaper_disposal
open_diaper
big_diaper
trapped_in_diaper
sniffing_diaper
hand_in_diaper
diaper_inflation
living_diaper
diaper_under_clothing
diaper_bulge
diaper_off
cloth_diaper
reverse_diaper_change
diaper_pail
swim_diaper
checking_diaper
diaper_clothing
diaper_on_face
cum_on_diaper
erection_in_diaper
diaper_penetration
trapped_in_diaper (new tag)
patterned_diaper
black_diaper
blue_diaper
brown_diaper
cyan_diaper
green_diaper
grey_diaper
pink_diaper
purple_diaper
red_diaper
teal_diaper
white_diaper
yellow_diaper
Then imply:
cum_in_diaper → cum
erection_in_diaper → erection
diaper_penetration → penetration
And alias:
clean_diaper → diaper
diaper_fetish → diaper
diaper_usage → diaper
diaperism → diaper
diapered → diaper
pull-ups(diaper) → diaper
dirty_diaper → messy_diaper
full_diaper → messy_diaper
sagging_diaper → messy_diaper
bulging_diaper → messy_diaper
stained_diaper → messy_diaper
soggy_diaper → messy_diaper
used_diaper → messy_diaper
diaper_mess → messy_diaper
hyper_diaper → big_diaper
changing_diaper → diaper_change
diapering → diaper_change
diaper_open → open_diaper
diapercritter → diaper_creature
diaper_critter → diaper_creature
diaper_transformation → living_diaper
diaper_wetting → wetting_diaper
diaper_soiling → soiling_diaper
diaper_expansion → diaper_inflation
leaky_diaper → leaking_diaper
diaper_leak → leaking_diaper
diaper_under_jumpsuit → diaper_under_clothing
diaper_stuffing → trapped_in_diaper (new tag)
diaper_entrapment → trapped_in_diaper (new tag)
pink-diapers → pink_diaper
I'm unsure if there really needs to be a wet_diaper as well as wetting_diaper, the same with soiling.
Or if licking_diaper would really count as touching_diaper.
Or if diaper_pail necassarily means there's diaper's in the image.
And pink-diapers could just be fixed manually.