As the doctor completed an examination of the patient, he said:
- I can"t find a cause for your complaint. Frankly, I think it"s due to drinking.
- In that case, - said the patient, - I"ll come back when you"re sober.
Every night, wasps bite into the stem of a plant, lock their mandibles (jaws) into position, stretch out at right angles to the stem, and, with legs dangling, fall asleep.