The pilot comes on the intercom and says, "Folks, this is your captain, we've reached our cruising altitude of 30,000 feet and it looks like a smooth ride all the way to OH MY GOD!!!..."
He doesn't say anything more. Neither do the passengers. After a moment, the intercom clicks on again:
Ladies and gentlemen, this is your captain again, sorry about that. While I was talking to you the stewardess brought me a cup of hot coffee and I spilled it. You should see the front of my pants."
And a man in the back spoke up weakly, "That's nothing. You should see the back of mine."