Why do scientists

Why is it, when a door is open it's ajar, but when a jar is open, it's not a door?
Tell a man that there are 400 billion stars and he'll believe you. Tell him a bench has wet paint and he has to touch it.
How come Superman

If "con" is the opposite of "pro", then what is the opposite of progress?

Why is it that lemon juice contains mostly artificial ingredients but dishwashing liquid contains real lemons?
Why do we wash bath towels? Aren't we clean when we use them?

Why do we put suits in a garment bag and put garments in a suitcase?
Why doesn't glue stick to the inside of the bottle?
What do little birdies see when they get knocked unconscious?
If man evolved from monkeys

Should you trust a stockbroker who's married to a travel agent?
War

