A blonde is tired of all the dumb blonde jokes, so she dyes her hair black. Then one day she drives past a farm and sees a farmer with his flock of sheep.

She stops and says to the farmer, “If I can guess how many sheep you have, will you let me have one?”

The farmer says, “Sure”.

She says, “112.”

The farmer says, “That's incredible. You're exactly right.”

As the girl is putting her prize in her backseat, the farmer says, “Hey…if I can guess what color your hair used to be, can I have my dog back?”