1) The actor who played Mr. Phelps, the main character of the MISSION: IMPOSSIBLE TV series. The Mr. Phelps character was also in Tom Cruise's first MISSION: IMPOSSIBLE movie (but not played by Peter Graves).
2) Slang for an STD that causes death, ED, or penile amputation.
1) Peter Graves was the brother of James Arnes who played "Matt Dillon" on the TV show GUNSMOKE.
2) DR.: Sorry, Billy Bob, I'm afraid that this time it's a lot more than just a Peter Boyle. You have a Peter Graves STD!