Biddy Martin could barely get out the words that she was feeling both ?sad and happy? about leaving UW-Madison before members of the UW Marching band began serenading her with a song.?Heyyyyy, baby,? they sang, circling her where she stood on Bascom Hill. ?I wanna know-oh-oh. Would you be my girl?? Nearby, a red and white striped tent housed trays of steaming bratwursts, jugs of iced tea and gallons of the aptly named ice cream Strawbiddy Swirl. A line snaked up the hill as people waited to get a plate of food and wish Martin well. It was a festive picnic to send off the UW-Madison chancellor to her new job as president of Amherst College. Her last day in office is Thursday.