Turn on the torch and check out planet ass! The magical size bracelet chapter 16 by SatireMarker

Taking a deep breath - which was weird, because you were now smaller than oxygen atoms making it functionally impossible to breathe, but whatever, magic bracelet - you turned on the torch to full beam and looked around. Then blinked.

It was impossible to tell that you were on an ass. You were surrounded on all sides by cells and atoms, all of which were about 1000 times bigger than you. The noise of the stadium was completely gone to be replaced by the sound of these huge atoms hitting each other and bouncing away. Looking down you saw that you weren't standing on a tight, muscular, huge arse - you were sinking beneath it, falling through the minute gaps in the skin cells. You couldn't help but watch as what you thought was an arse hair (its cells were tightly packed together and went straight up into the air) moved slightly from side to side. Of course, to you "slightly" was probably like a hundred miles at this point, and the hair itself was probably about 1000 miles tall. You shook your head but allowed yourself to sink into the skin, beneath it, where you reached the bloodstream. Titanic red blood cells swarmed around you, battering you around, but your invincibility rejected their colossal as well. Even these cells were thousands of feet across and you had to speed up even more to escape their relentless movement. You were able to latch onto one and crawl on top of it, riding it. Now this was an adventure!