A man and a woman are having dinner in a fine restaurant. Their waitress is taking another order at a table a few steps away and notices the man is slowly sliding down his chair and under the table, and that the woman acting unconcerned.
The waitress watches as the man slides all the way down and out of sight under the table. Still, the woman across from him appears calm and unruffled, apparently unaware that he has disappeared.
When the waitress finishes taking the order, she comes over to the table and says to the woman, "Pardon me, Ma'am, but I think your husband just slid under the table."
The woman calmly looks up at her and replies, "No he didn't. He just walked in the door."