The Big ImageBoard (TBIB) - 2 penises 4 balls all the way through anthro balls blush bodily fluids canid canine canis collie diphallism domestic dog erection genital fluids genitals gizmo props herding dog hi res knot longblueclaw lube male mammal masturbation multi balls multi genitalia multi penis nude pastoral dog penetration penis penis tongue plantigrade precum sheepdog sitting solo threaded by object u-turn penetration unusual anatomy unusual genitalia placement unusual penis placement urethral urethral all the way through urethral masturbation urethral penetration urethral threading vertical diphallism what