During a trip to the museum, Lawrence described a canine fossil that had been dug up in their neighborhood. Upon seeing the collar with Bucky's nametag still attached, Phineas asked, "Didn't we have a dog named Bucky who got sick and went to live on kindly Old Man Simmons' farm?" Lawrence dithered in his answer and led Phineas, Ferb and Perry to the next display, which was the skeleton of Old Man Simmons himself. Lawrence quickly diverted their attention by offering to buy milkshakes ("It's About Time!").