For instance, did you know that one tool may be used for, or like another tool? I'm sure you do, or have -like a screwdriver that you used as a chisel, or the handle of as a hammer - not that is just wrong ( because it ruins the tool), but it s common.
There are, however, some improper usages that for the most part I can't think of, but some of which may come involuntarilly.
I learned of such yesterday.
The retractable blade utility knife may, depending upon materials, be used as a hatchet; with a chopping motion.
Now, a hatchet is not for slicing, though there are cleavers which might do both, given usage, etc., but typically, the razor-knife, as it commonly known, is not built for such, having a thin blade, not meant for striking.
That is unless the material with which you are working - cutting at- something soft yet pliable, and perhaps with a fibrous consistency, like vinyl roofing , or similar ( as I said) , applying enough pressure- force- to cut through while slicing said material... until there is a sudden give, whereby, uexpectatedly- with 'mouse-trap' or snapping motion, then blade passes through and comes down upon/ cleaves-into one's thumbnail, precisely cutting, separating it into two, vertically ( longitudally).
Mmm...such precision, and with minimal penetration of the softer tissues below; apparently...
This action I did perform, indeed unexpectedly, and suddenly ( being a snapping 'chop'), which did elicite redness, fluid, as it were, as well as fluid, streaming curse-words.
Dammit, man...be more careful. That's easy for you to say, explicit expletive in a loud manner, I repeated, repeatedly, little old lady neighborhood ears be damned or cursed upon.