When bowling, Stewie gets his turn at the same time as a new kid, William. They're both using child bowling ramps, which means both balls are "thrown" with roughly equal strength, mostly just gravity. William doesn't wait and bowls first, followed several moments later by Stewie, yet by about halfway down the lane they are shown to be rolling parallel, as if Stewie's was going faster and caught up. Then Stewie's comes to a dead stop while William's reaches the end, indicating that Stewie's was actually going slower. The ball speeds are inconsistent with how and when they were "thrown".