The Simpsons Season 20 Episode 2

As the only kid in school not to own a cell phone Bart cannot believe his luck when he finds one discarded on the golf course by Denis Leary,which he uses to make prank calls to bars around the world. Marge gets a call from Denis,advising her to activate the phone's tracking chip,which will allow her to keep tabs on Bart at all times,but Bart gets wind of this and transfers the chip to a bird's leg. Consequently the family are led to Machu Picchu and a new appreciation of each other.