The Transitive Property of joke explanation states that the explanation of the joke is inversely proportionate to its funniness. Be warned, the more accurately I explain the joke, the less enjoyment u may derive from it.
I say, “did u hear about the famous actress who was stabbed?” When I say “Reese…” ur brain supplies the answer to ur mouth before it can detect the pun i have loaded in the next chamber. When u say “Witherspoon”, I act like u were suggesting she was stabbed “with a spoon” rather than simply supplying her last name, to which I helpfully reply, “no, with a knife,” thereby placing u in the position of having supplied my pun for me, leaving me the privilege of the mic drop punch line.
See, all the funny has evaporated, like so much ether from an erlenmeyer flask over a Bunsen burner.