Here is one of my favorite old Mad cartoons. It's by the late Ernie Kovacs (draw by Wally Wood) and is part of Kovacs' series called "Strangely Believe It" (a satire of Ripley's "Believe it or not"). It's from issue #33, June 1957:
I looked it up because it reminded me of some of the "factoids" that the current crop of Republican presidential candidate have come up with. Just look at the various "fact check" features in newspapers and the Web after a Republican debate.