A man goes to his doctor and says “I think I’m pregnant”.
“I was joking with my girlfriend and I pissed on her pregnancy test and it came back positive!”
The doctor looked worried, “Well, unfortunately, when a man gets a positive on a birth control test, it might be a sign of prostate cancer.”
The man looks at him, “So I’m not pregnant, but I might have prostate cancer?”, and the doctor nods.
The man stands up and says “PHEW! I really dodged a bullet there!”