Rule 34 Dev - 2boys anal anal_sex animal_genitalia animal_penis belt bloodshot_eye clothing copepod crab crustacean duo erection gay green_skin interspecies larger_male male male/male male_only mr_krabs nickelodeon penis penis_in_anus plankton_(species) red_body sheldon_j._plankton shengtian size_difference smaller_male spongebob_squarepants white_background|11663974832