Questions：
1. What is big and yellow and comes in the morning, to brighten mom's day?

2. Two fathers and their two sons go fishing together. They each catch one fish to take home with them. They do not lose any fish, and yet when they arrive at home they only have three fish. How can this be?

3. What begins with T, ends with T and has T in it?

哈哈，有趣

2.  There are only 3 man: grandfather, father and son.