When you keep saying that, it starts to sound like you do steal the memes lol...and yes, this is a very old meme, seen it many times too.
I'm gonna go out on a limb here and guess that you saw the Elon Musketeer meme and then decided to think of your own "teacher asks you what you are thinking meme" about Elon Musk and you were like, "Elon Musketeer? How about Elon Musk...et....Elon Musket!"....and throwing care to the wind the high likelihood of such an obvious pun already having been done many thousands of times already. Just a theory.