![1boy :d animal_ears anus astolfo_(fate) bangs bed_sheet belt_collar black_bow black_collar blush bow braid cat_boy cat_ears censored chain chained collar collarbone commentary crop_top crop_top_overhang english_commentary erection erection_under_clothes eyebrows_visible_through_hair eyelashes eyes_visible_through_hair fang fate/apocrypha fate/grand_order fate_(series) folded from_above hair_between_eyes hair_bow hair_intakes half-closed_eyes hands_up head_tilt heart heart-shaped_pupils light_particles long_hair looking_at_viewer lying male_focus miniskirt mosaic_censoring multicolored_hair naughty_face neckerchief no_panties on_back open_mouth osiimi otoko_no_ko patreon_username paw_pose penis perineum pink_eyes pink_hair pink_neckwear pink_sailor_collar pink_skirt pleated_skirt raised_eyebrows sailor_collar school_uniform serafuku shadow shirt short_sleeves single_braid skindentation skirt sleeve_cuffs smile solo spread_legs stomach streaked_hair symbol-shaped_pupils teeth testicles thighhighs thighs tongue tongue_out two-tone_hair upskirt very_long_hair w watermark web_address white_hair white_legwear white_shirt rating:e score:22 post #3045401](/cdn_image/preview/a9/3f/a93ffb8e2256198c51a28e9e04ddfc39.jpg)
男の娘 (otoko no ko) is a Japanese slang term used to refer to persons of male biological sex who have taken on the appearance and/or identity of the female gender. The term is a pun on 男の子 (otoko no ko), meaning "boy", replacing 子 with the ko reading of 娘 (commonly musume, girl).
Some communities have mistakenly taken to using the term as a word for feminine boys no matter if they convincingly wear girl's clothing or not. If you can correctly tell the gender with complete certainty from the thumbnail alone without looking at the genitalia, it's not this.
English-speaking fandom has traditionally used the word "trap" for this concept. Due to the negative implications of the term and its history (which 男の娘 largely does not share) as well as the term's ambiguity in English, its use is inappropriate for tagging purposes and it has been aliased.
On Pixiv the tag 男体化 is sometimes used for genderswap or otoko no ko art, but its meaning- "male's body", has multiple definitions. It can be a crossdresser who has a more masculine body (but isn't obviously a man), a woman who is very muscular, or it is sometimes used in place of otoko no ko (i.e. "he may have hips, but that's a boy's body").
The following tags are aliased to this tag: femboy and trap (learn more).