"Balloon Ride" joke

Jim is in a hot-air balloon, completely lost. He sees a man in a field below and flies down to him.
"Excuse me sir, but can you tell me where I am?"
The man in the field replied "You're in a balloon."
Jim said "You're an engineer, aren't you?"
"Why yes, I am. How did you know?"
"Because you gave me a perfectly logical, yet completely useless answer."
Jim continued flying, when he saw another man in a field. "Excuse me, sir, but can you tell me where I am?" he asked.
"Well, you're about two miles north of Ogdenville. If you go to the west side of town you'll find an airstrip that you can safely land on."
Jim replied "Thank you very much, sir. That was extremely helpful. Say, I'll bet you're a manager, aren't you?"
"Why yes, I am, how did you know?"
"Because your pants are on backward".