Dick longer than 5.5 inches? Snip snip!

I assume that, for humans, the average number of legs must be a number below two since most people I know of have two, while some have one or none and only very few have three or more.

I wonder how those 1.something-legged pants would look on all the people with different amounts of legs than that average number. Luckily, it seems it's currently more common for clothing designers to snap to the normal (as in common number) rather than design for the average number. I guess people with less than two, or with prosthetics, can use two-legged pants to some degree, but with more legs than average, it seems, you'll still be in trouble at the mall – unless there's a skilled tailor in there too!

Well then let's flip that right around then: if "most people" never do it, why the fuck should they spend the energy to ban it?

The difference between "average person" and "most people" is beside the point. It doesn't really matter if we're talking about 1 standard deviation from median or 3. Edge cases matter. Outliers matter. Choice matters. People matter.