Observed

[marval]

Scientists have observed that when one pizza delivery guy falls over, several others also fall over.


This is known as the domino's effect.

[frugalfred]

This joke is the pits, uh?

[Captain2]

I 'spotted' that one coming

[Patsy33]

Spot on!

[frugalfred]

Rather an acne'd remark.

[Tilly2]

Who's knocking?

[Jackdaw33]

I don't get any of these.

[Tilly2]

Don't you play dominoes, Jackdaw? Fives and Threes?

[Chipchopper]

I hear that scientists are trying to train seagulls to deliver pizza's.

Quite a few people volunteered in the scheme and many said they didn't expect extra droppings.