"If it isn't David, the software engineer!”
"That's me!" replies David. "But wait, how'd you know I was a software engineer?"
The doctor holds up a folder. "We got the results back from the lab. It's obvious."
"Obvious?" asks David. "How can you tell that from a stool sample?"
The doctor replies, "David… there's no easy way to put this… but your shit's full of bugs."