Three guys were struggling to keep a hot air balloon in the air. Burner gas was running low and they needed to gain height to avoid a tall building up ahead.

One said, "We have too many of these, I'll throw one out." And dropped a piece of wood.

The second guy said, "We have too many of these." And dropped a brick.

The last guy said, "We have too many of these." And dropped a bomb.

On the ground, a police officer found a guy crying. "Why are you crying?" he asked in concern.

"A plank of wood hit me on the head!" the man replied.

The officer radioed for an ambulance, walking on when it arrives. He then saw another guy crying. "Why are you crying?"

"A brick hit me on the head!" the man replied.

Again the officer radios for an ambulance. The same ambulance carrying the first man attends and the officer continues his walk. Before long, he sees a guy laughing. "Why are you laughing?" He asked.

"I farted and the building behind me blew up!"