FURVERT!

against_surface against_wall analon_(artist)animal_genitalia anthro anus arms_tied barefoot biped bodily_fluids bound bowser cel_shading clenched_teeth cuff_(restraint)erection feet foreskin genital_slit genitals horn humanoid_genitalia humanoid_penis koopa lying male mario_bros monochrome musclegut muscular nintendo nude on_back overweight overweight_anthro overweight_male penis plantigrade reclining restrained restraints retracted_foreskin scalie sepia shackles shaded sheath shell slightly_chubby solo spiked_shell spikes spikes_(anatomy)spread_legs spreading submissive submissive_male sweat sweatdrop teeth toes uncut_with_sheath uncut_with_slit