My favorite gerrymandering story was when I learned an ~800 student local college had been split down the middle, so students were in different congressional districts depending on their dorm building.
My Texian childhood was in three congressional districts (small town feeding into one high school).
It's much worse, now.
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The fact that there are non-contiguous US Congressional districts (e.g. TN's 2nd/3rd have inholdings within each other) makes the entire process even sillier.
Also see: Nashville, Tennessee
Like your dormroom example, ATX is very progressive.