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1:1 anthro balls big_penis bluesh bowser collar countershading flaccid foreskin genitals hair hi_res horn humanoid_genitalia humanoid_penis koopa male mario_bros musclegut muscular muscular_anthro muscular_male nintendo nipples nude partially_retracted_foreskin penis red_hair scalie shell sitting solo spiked_collar spiked_shell spikes spikes_(anatomy)vein veiny_penis yellow_body