A straw is just a stretched doughnut.
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So is a mug, you can drink from your doughnut using a doughnut.
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A mug has one hole, as do a donut or staw. Topologically speaking, the “hole” you put your liquids in is not a hole, as it does not go all the way through to the other side. The handle is the only hole.
Demonstration gif: https://upload.wikimedia.org/wikipedia/commons/2/26/Mug_and_Torus_morph.gif
I think you should go to the kitchen and count them
Are all circles in physical reality actually cylinders, only some are very short?
Yes
Not really cylinders, but toruses. Disks with extent are cylinders.
Also every circle we draw has some thickness so we’re actually drawing annuli
photobleaching?
