Grumpy Old Geeks People Tim Woodruff Person Tim Woodruff 2 mentions in 1 episode Tim Woodruff is a listener who created and sent Dave a microfiber cleaning cloth with a grippy side. Mentions 544: Men of a Certain Age Mar 11, 2022 57:07 a friend of the show, Tim Woodruff 57:24 He invented a microfiber cleaning cloth