Riddle-10pts to who gets it first!?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50."

The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less.

In the end the boy ended up paying the man $50. How did the man win the bet?

Jessica R is correct. She will soon receive 10points after 4 hours.

he wrote "your exact weight" on the paper =)

He said you weigh less than me

no clue.
what's the answer? I'm dying to know!!!

he guessed, and the boy said no, and then the man slapped him and said YES IT IS!!!

he wrote your exact wait on the piese of paper. i am gonna star this one!

idk

oh.
hehehehehe
good one.

That's a good one..heh.

i think the man ask the boy's exact weight and write it on the piece of paper...the man never said that he is going to guess his exact weight..he is just going to write it on the piece of paper... lol