Pictures:

Why can't you trust a staircase?

It is either up to something, or letting you down.

2450

What is black when clean, and white when dirty?

A black board.

2032

Why does filling up tires keep getting more expensive?

Inflation.

1759

Why is it hard to trust a staircase?

It's always up to something.

2033

What do you call a wasp that would prefer to be a bee?

A wannabee.

1560

What are French sandals called?

Phillipe Phellop

1852

What happens if two silk worms have a race?

They end in a tie.

2280

Why didn't the clam share its food?

Because it was shell-fish.

1766

What travels around the whole world and stays in the corner?

A postage stamp.

1754

What does the Eiffel Tower have in common with a tick?

They are both Paris sights.

1875

What do you call a very young bee?

A bay bee.

3171

What did the plate say to the food?

The meal is on me.

2050