Santa: I have swallowed a key. Doctor: When? Santa: 3 months back! Doctor: What were you doing till now? Santa: I was using duplicate key, now I have lost it too.
Banta Singh finished his English exam and came out. His friends asked him how he had fared. He replied, "Exam was okay, except for the past tense of 'think'. I thought, thought, thought and at last, I wrote 'thunk'