It's the last leg of their trip and their first stop is Phuket, Thailand, where the five take part in a wild water fight before celebrating Terry's 67th birthday. Jeff takes Terry to get his first-ever tattoo, while William and Henry get bent into all different directions with a not-so-relaxing Thai massage. George takes the gang to watch Thai boxing before stepping into the ring with William, and, later, Terry gets serenaded by a special guest at an unforgettable birthday dinner. Then it's off to Chiang Mai, their final destination, for a luxurious stay at an amazing hotel. In one of the most moving experiences of their trip, they spend the day at an elephant sanctuary and then visit the women and children of the long-neck tribe.