Sarah dropped in on her sister Molly and found her sitting at the kitchen table, staring blankly at a half-empty cup of coffee, her three kids squabbling loudly in the other room.
"What's wrong Molly?" she asked.
Molly told her that she had morning sickness.
Surprised, Sarah said, "Hurray! I didn't even know you were pregnant!"
"I'm not," the harried middle-aged mother replied.
"I'm just sick of mornings."