rule 34 1boy 2015 abs animal genitalia anthro blue background blush brown scales crouching diphallism dorsal fin erection fin fin piercing fish furikake furry specific piercing genital slit gills hemipenes humanoid penis kain licking licking lips looking at viewer male male only marine multi penis nipple piercing nipples nude open mouth pecs penis piercing precum presenting scales sex toy shark sharp teeth simple background slit slitfluid smile solo stripes tan scales teeth thick tail tongue tongue out 1859751