THE WHEELS ON THE BUS GO ROUND AND ROUND

Over-heard today on the bus.
"...this this one lady there said she makes up to 500 dollars for each one! I did one last week and I'm on my way to one at the college now."
"So, you're basically a human guinea pig?"
"Yeah, Except they won't let me do the ones where you have to take drugs any more, It's not fair! I haven't had a seizure in years."