What does Alexander the Great and Winnie the Pooh have in common?

How is a fly different from a mosquito?

Forwards I am heavy, backward I am not. What am I?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

A California farmer owns a beautiful pear tree. He supplies the fruit to a nearby grocery store. The store owner calls the farmer to see how much fruit is available for him to buy. The farmer knows the main trunk has 24 branches. Each branch has exactly 12 boughs and each bough has exactly 6 twigs. Since each twig bears one piece of fruit, how many plums will the farmer be able to deliver?

What has a bottom at the top?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

I am sure no one can have two things for dinner. what are they?