Rule 34 Dev - duo electricity electro_gel electrocution electrostimulation erection fellatio female genitals glistening internal internal_oral male not_furry oral penetration penetration_interlock penile penis sex simple_background slime tentacles translucent translucent_body translucent_tentacles urethral urethral_penetration urethral_tonguing nana_gel goo_creature humanoid mammal 2017 hi_res|5012893200