rule 34 2023 abstract background anthro areola armpit hair backwards baseball cap backwards hat barefoot baseball cap belt biceps big bulge big muscles bodily fluids body hair bottomwear bulge chest hair clock clothed clothing comparing deltoids denim denim bottomwear denim clothing duo equid equine eyebrows eyewear feet glasses hair hand behind head hat headgear headwear hi res hotpants huge bulge huge muscles jeans jock kihu male male only mammal muscular muscular anthro muscular male nails nerd nipples obliques pants pecs plantigrade quads serratus shirt shorts simple background size difference smile square crossover standing sweat sweatdrop tank top thick thighs topwear vein watch 9268844