1:1 4_toes anthro balls barefoot bdsm bondage bound chastity_cage chastity_device chiropteran clothing collar countershade_feet countershading dungeon electrostimulation encasement feet foot_fetish foot_focus fully_bound gag genitals hi_res humanoid_feet male mammal muzzle_(object) penis plantigrade prison_uniform prisoner restrained restraints rubber rubber_clothing rubber_suit science_fiction shackles slave soles solo soppip soppip_(artist) stocks submissive submissive_male tickle_torture tickling tickling_machine tight_clothing tiptoes toe_restraints toes