rule 34 2018 absurd res all fours ambiguous penetration anthro ass big butt blue hair clothed clothing digital drawing artwork digital media artwork gy style domestic cat duo eroborus felid feline felis from behind position fur hair hi res koopa koopa clown car koopaling ludwig von koopa male malemale mammal mario series nintendo partially clothed penetration pink body pink fur roz scalie sex shell smile spiked shell spikes spikes anatomy tongue tongue out video games yellow body 4464795