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Alias To Reason
clothing (0) clothes (6706)
cloud (0) clouds (788)

same

cock (0) penis (19331)

same reason as dick

cookies (0) cookie (103)

plural - singular

cross (0) (25)
crossbreeding (0) interspecies (979)

might as well have only one

crossdress (0) cross_dressing (468)
crossdressing (0) cross_dressing (468)
crossgender (0) genderswap (175)
cry (0) tears (5943)

we already have a tag for that, thank you.

crying (0) tears (5943)

Same thing. This is more preventative, since there's only 5 "crying" tags, but still...

csimadmax (1) madmax (10)

See forum #40448

cth (0) clarence_the_hare (5)

current FA account name

cub (0) young (9821)

cub deals with age, let's just keep it to age

cuddle_(htf) (0) cuddles_(htf) (42)
culumon (0) calumon (86)

original name

cum_on_face (0) facial (491)
dagasi@ツイッター (0) dagasi (586)
dameha (0) dame-ningen (16)
dedede (0) king_dedede (48)