WikipeDHD
Entering wikipedia and opening several dozen windows because the one thing you were reading is linked to something else that (somehow) captures your attenion. This is common with things irrelevent to the intended topic.
Bill: I was on Wikipedia yesterday and when I looked at the menu bar, there were 12 pages open.
Tom: Are you sure you don't have WikipeDHD
Tom: Are you sure you don't have WikipeDHD