rule 34 1boy 2021 abs absurd res anthro anthro only balls bara barazoku biceps bowser bowser day bracelet cock ring endertwinks erection genitals glans green face grey background half closed eyes heart hi res horn horns looking at viewer male male only mario series muscles muscular muscular male nipples penis pierced nipples red eyes red hair shell simple background smile smiling solo solo male spiked bracelet spiked fingernails spiked shell spikes standing super mario bros teeth training two tone body two tone skin weight weights white background yellow body yellow skin 4961331