It has happened before. Seven times, in fact. If you're not careful Purdue will wreck your shit!
Let's have some good football memories, shall we? Yesterday Reddit CFB published this article documenting the poll positions that each school at the FBS level has beaten the most. Shockingly, the position Purdue has beaten he most is right at the top. The Boilermakers, nay, SPOILERMAKERS, have beaten the No. 1 team in the nation 7 times. That puts us right up there with some pretty elite company:
Miami has beaten the AP #1 team 9 times, Alabama and Notre Dame 8.