rule 34 animal genitalia animal penis anthro ass bartholomew martins bent over big butt big muscles big penis biped bottomwear bulge clothed clothing dick slip elephant elephantid exercise flaccid footwear genitals gym shorts hair hi res hotpants kartos kettlebell looking at viewer looking back male male only mammal mature male monochrome muscular muscular anthro muscular male pachyderm penis penis through leghole perspective poking out proboscidean proboscis anatomy raised tail rear view shaded shoes shorts simple background sketch solo spread legs spreading thick thighs topwear trunk trunk anatomy tusks wardrobe malfunction weights workout 4247082