rule 34 2019 abs anthro ass biceps bodily fluids border chestnuts artist clothed clothing clothing aside dripping ear piercing erection exposed fist flexing flexing bicep footwear foreskin genital fluids genitals grey background grin looking at viewer male mammal manly muscular muscular legs navel nipples pecs penis piercing precum precum drip precum on ground presenting pubes rhinoceros sandals simple background smile solo stubble thong thong aside thong only topless triceps underwear underwear aside underwear only vein veiny penis white border 9119579