M*A*S*H ponderings

One of the TV shows I like to watch is M*A*S*H. If you've never heard of it, it's about the experiences of a fictional crew of doctors, nurses, and staff at the equally fictional Mobile Army Surgical Hospital number 4077. Anyway there was this one episode where B.J. Hunnicutt grows weary of Benjamin Pierce, aka Hawkeye, talking about how much of a better prankster John "Trapper" McIntyre was when he was there. So he makes a bet that if B.J. can successfully "get" everybody currently sitting at that table (they're in the mess tent at the time) with pranks, that Hawkeye has to take his pants down and sing "You're The Tops". And if he fails, B.J. has to do it instead. Well, B.J. manages to get *almost* everybody except of course, Hawkeye, who loses part of his sanity that night guarding himself against whatever horrible finale B.J. has reserved especially for him. He wakes up the next morning only to find that all the people that allegedly got pranked were in fact only pretending to be pranked, and were actually in on B.J.'s plan to pull the ultimate prank on Hawkeye, "the one that never happened." So Hawkeye ends up being the one taking down his pants and singing "You're The Tops" in the mess tent. Now this is the part that bugs me. The official bet was to see if B.J. could get everybody in that group, and Hawkeye *was* considered to be in the group. But by B.J.'s own admission, Hawkeye was the only one who actually got "got". That would mean, based on the conditions set forth in the wager, that B.J. failed, because technically, he only got one person. And so Hawkeye still won the bet (despite being taken down a few pegs). Why didn't the writers of this episode notice that?