unbirth while penetrated

When an unbirthed character is inside of the vagina during the act of vaginal penetration.

Note that this does not imply pinned by penis because the vagina does not count as a surface for the purposes of the pinned tag, otherwise all vore would be considered pinning.

If the unbirthed character also tries to penetrate the incoming penis in return, that would also be penetration interlock.

See also trapped in condom and in the middle.

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alolan_form alolan_vulpix anus belly big_belly big_breasts bladder branch breasts delphox dildo duo fallopian_tubes female feral from_behind_position generation_6_pokemon generation_7_pokemon genitals guts hi_res humanoid inside_uterus intersex intersex/female intestines nintendo organs orgasm penetration pokemon pokemon_(species) presenting presenting_pussy pussy regional_form_(pokemon) scared sex sex_toy unbirth_while_penetrated unbirthing uterus vaginal vaginal_penetration vore whlelly
16:10 4_arms 4_wings absurd_res animal_genitalia anthro balls belly big_belly breasts dildo dildo_insertion dragon duo eyeless_face female fluffy fluffy_chest fluffy_tail folds fur genitals glowing glowing_horn glowing_wings hi_res honeyfly horn hybrid male male/female markings multi_arm multi_limb multi_wing mythological_creature mythological_scalie mythology overweight overweight_female penetration penis pussy scales scalie sergal sex_toy sex_toy_insertion sheath striped_markings stripes tail tapering_dildo thick_tail thick_thighs tied_to_dildo unbirth_while_penetrated unbirthing vaginal vaginal_penetration vore widescreen wings
2018 absurd_res anthro bodily_fluids butt comic cunnilingus domestic_cat extreme_size_difference felid feline felis female femboy genitals group hi_res internal lagomorph leporid macro male male/female mammal micro mouth_shot open_mouth oral penis pussy rabbit saliva sex size_difference text thaismotosuwa tongue trio unbirth_while_penetrated unbirthing url uvula vaginal vore
anthro anthro_pred anthro_prey bodily_fluids comic cum cum_bath cum_in_pussy cum_inside cum_on_micro domestic_ferret ejaculation erection female female_pred genital_fluids genitals group hi_res internal internal_vaginal larger_pred luka_(weaselclaw) male male/female male/male male_prey mammal micro micro_in_pussy micro_prey mustelid musteline penetration penis size_difference trio true_musteline unbirth_while_penetrated unbirthing vaginal vore weasel weaselclaw werther willing_pred willing_prey