That only works for ol' Knobs Fansome. Besides, he'd have to swipe one of his girlfriend's SDR's to make the trade. He's still in the doghouse over dating those identical cousins on the side, Patty and Cathy Lane. He'd be out by the highway selling his slide rule collection for food and a tarp if he swiped one of her SDR's.
The idea of a Fansome in the family put ol' Prof. Lane in his grave, may he rest in peace.