rule 34 2018 5 fingers anthro balls big balls big muscles big penis canid canine clothing erection fierglief fingers flexing genitals grin huge balls huge cock huge muscles hyper hyper balls hyper genitalia hyper muscles hyper penis line art looking at viewer male male only mammal monochrome muscular nipples partially submerged penis smile solo stretched clothing underwear vein veiny muscles veiny penis 3849514