This is my favorite extension ever, gets a good laugh out of me every time is see something from it

I confirm, it doesn't change anything in the display of webpage when browsing the Internet, neither in the google image search, wikipedia, nothing.

Except when you search "Donad Trump" it shows Frump-a-lump instead of Donald Trump, but even the example search "serious people" shows only "serious people", no joke image.

Rename your extension or add more jokes. It's a bit light.