Sentence ambiguity joke

1, riding for three years. There are two meanings: first, I have been riding a bike for three years. Second, I have been riding this car for three years.

2. Pick up Lao Li's assistant. There are two meanings: first, the assistant belongs to Lao Li, and (I) will take this assistant. Second, this assistant belongs to Lao Li and is here to pick him up.

The bike is not locked. There are two meanings: first, the bike could have been locked, but it didn't. Second, this bike is not locked.

4. Scientists returning from a visit to the United States. There are two meanings: first, (I) visited scientists who came back from America. Second, scientists returning from a visit to the United States.

5. Improper discipline of children. There are two meanings: first, the method of disciplining children is wrong. Second, the timing of disciplining children is wrong.

He knew it didn't matter. Whether he knows it doesn't matter to us. Second, he knows it's okay.