From Comedy Central "Joke of the Day" google plugin:
A woman and a baby were in the doctor’s examining room, waiting for the doctor to come in.
The doctor arrived, examined the baby, checked his weight and found it somewhat below normal. The doctor asked if the baby was breast fed or bottle fed.
“Breast fed,” the woman replied.
“Well, strip down to your waist,” the doctor asked. She did. He pressed, kneaded, rolled, cupped, and pinched both breasts in a detailed, rigorously thorough examination.
Motioning for her to get dressed he said, “No wonder this baby is under weight! You don’t have any milk.”
“I know,” she said, “I’m his grandmother, but I’m glad I came.”
Two bats are going for their midnight feed.
After an hour or so, one bat gets tired of looking and goes home with no blood.
The other bat comes home with blood dripping from its mouth. The first bat says enviously, "Where did you get all that blood from?"
The second bat replies, "Follow me. I`ll show you."
After awhile the second bat leads them to a cave. He says, "You see that wall over there?"
The hungry bat excitedly says, "Yes!"
Other bat says, "I didn't."