barcode bondage bound breasts cleavage clothed clothing collar cutie_mark diaper dickgirl duo equine fan_character female gag heart horse hypnosis intersex kneeling krd legwear mammal mind_control misty_(oc) monochrome my_little_pony nipple_piercing nipples penis petting piercing pony pussy rubber sitting sketch small_breasts solo stockings straitjacket tattoo