Funny bridge

A- the lost one, B the wise one
A: Oh wise one, I'm lost.
B: how may I help you?
A: How to cross the river?
B: Use the bridge.
A:How to cross the bridge?
B: GEt up the bridge.
A: How to get up the bridge?
B: I dunno.
A: I thought you are the wise one.
B: You can't use the bridge, that's why it is called the funny bridge!
A: ( collapses and dies of 'zha-dou'ness)
B: Hmm.... the wise one doesn't ask questions that doesn't have anwers.
Drawn with Google Sketch up 6!.
This is one powerful software!!