FURVERT!

anal anal_masturbation anal_penetration anthro anthro_penetrated anus back_muscles backsack balls biceps biped blush bowser bullet_bill butt collar collar_only digital_media_(artwork)dildo dildo_sitting erection genitals hair hi_res horn humanoid_genitalia humanoid_penis koopa looking_at_viewer looking_back looking_back_at_viewer male male_penetrated mario_bros masturbation muscular muscular_anthro muscular_male nintendo nude penetration penis rear_view rolz scalie sex_toy simple_background smile solo spiked_collar spikes tailless teeth toying_self