Then the lightbulb came on. It could be one of two things...
1. I am now a kindergarten teacher and my students are teenie tiny, so I am constantly squatting down to meet them on their level.
Or...
2. Chinese public toilets. The squat toilet (I took this photo from a Google images search, and it accurately represents all of the public toilets I've seen so far, although this one may be a tad bit cleaner)...
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But I'm gonna go more with #1 than #2 since I haven't used the public toilets THAT much yet.