The Nasty Bug
A man went to answer a knock at the door of his house and saw a six-foot cockroach standing there. Without warning, the cockroach slapped him around the face and ran away.
The following night, the man answered another knock at the door. Again, there was a huge cockroach standing slyly there. This time it bit him and ran away.
On the third night, the same thing happened again, but this time the gigantic cockroach kicked him hard in both knees before running off.
The man was so worried by this that he went to see the doctor. The doctor said: “Yes, there’s a nasty bug going round.”