What Can't A Cow Do On The Tube? | QI

You can now watch every series of QI, including this one, on iPlayer! ▶ http://qi.com/iplayer Follow QI on Twitter ▶   / qikipedia   Follow QI on TikTok ▶   / theqielves   Follow QI on Facebook ▶   / officialqi   Follow QI on Instagram ▶   / theqielves   Subscribe on YouTube ▶    / theqielves   For more visit ▶ http://qi.com This clip is from QI Series T, Episode 13, 'Tubular' with Sandi Toksvig, Alan Davies, Bridget Christie, Deborah Frances-White and Sara Pascoe.