This is a joke ntended to illustrate the sometimes absurd oversimplification that has to be made to do certain calculations. An apple falls out of a tree from 20 feet off the ground, how long does it take to hit the ground. Well, what is the drag coefficient? Assume it’s a sphere. OK, what about the texture, the air temp, wind, is the ground level and flat, etc etc. And as the problems increase in complexity the number of variables increases exponentially. So your professor might tell you to "Assume it is a spherical cow of uniform density“.
Often these estimates are actually quite good and trying to account for all variables isn’t needed.
If you don’t care enough about the topic to take a few seconds to proofread and format your questions why would I care to decipher them? 12 year olds learn that taking the time to write a first and second draft will improve the final product.
Definitely some acceptable variation between informal chats and emails being sent to whole teams so know your audience.