Mary was having a tough day and had stretched herself out on the couch to do a bit of what she thought to be well deserved complaining and self-pitying.
She moaned to her mom and her younger brother, "Nobody loves me...the whole world hates me!"
Her brother, busily occupied playing a game, hardly looked up at her and passed on this encouraging word... "That's not true, Mary. Some people don't even know you."
My wife got a mud-pack, and looked great for two days...
Then the mud fell off.
Nurse: "How old are you?"
Patient: "None of your business."
Nurse: "But the doctor must know your age for his records. Please, just tell me, I'm going to find it out anyway."
Patient: "Well, first, multiply twenty by two, then add ten. Got that?"
Nurse: "Yes. Fifty."
Patient: "All right, now subtract fifty, and tell me, what do you get?"
Nurse: "Zero."
Patient: "Right. And that's exactly the chance of me telling you my age."