Iron not included. 
Here's a not-so-new joke:
A man was driving down the road and ran
out of gas. Just at that moment, a bee flew in his window. The bee
said, 'What see ms to be the problem'? 'I'm out of gas.'
The b ee told the man to wait right there and flew away. Minutes
later, the man watched as an entire swarm of bees flew to his car
and into his gas tank. After a few minutes, the b ee s flew out.
'Try it now,' said one bee .
The man turned the ignition key and the car started right up.
'Wow!' the man exclaimed. 'What did you put in my gas
tank'?
The bee answered, 'Bee Pee.'
