Once again, the blonde says, I am very tired, and I am not interested. The attorney is used to getting his way, and says to her, I tell you what, if you can't answer my question, you pay $5 and if I can't answer your question, I will pay you $100. To this proposal, the blonde says OK, lets do it.
The attorney starts with this question, how far is it from the earth to the sun? Without a word, the blonde reaches into her purse, pulls out $5 and gives it to the attorney.
Feeling pretty cocky, he asks her what her question is. She asks him, what goes uphill on four legs and comes back down on three? While the attorney is pondering this riddle, the blonde lays her head against the side of the cabin and goes to sleep.
For the remainder of the flight, the attorney searches on the internet and calls all of his friends who he thinks might know the answer to this riddle. When the plane touches down at their destination, the blonde wakes up and the attorney says to her, you got me, I don't know the answer to your riddle, and he hands her a 100 dollar bill.
Then he asks her, what does go uphill on four legs and comes back down on three?
Without a word, the blonde reaches into her purse, pulls out a five dollar bill and gives it to the attorney.
And you thought blondes are dumb!
