Here's two jokes to make you smile. They're from the book 1000 Jokes For Kids Of All Ages:

First Joke
"If you found a pound note [dollar, euro ..] would you keep it?"

"No, vicar."

"That's a good boy. What would you do with it?"

" I'd spend it."

Second Joke
A very pretty teenage girl said to her boyfriend, "Do you think I'm vain?"

"Of course not," he said loyally, "Why do you ask?"

"Well, girls as beuatiful as me usually are."

Do you know that if you're feeling stressed and low vitamin B complex can help (as well as listening to a good joke).