My Unicorn - S4-E11
Trivia: The father needing a kidney and the son trying to sell him his in this episode are played by real life father and son John Bennet Perry and Matthew Perry.
Trivia: JD and Turk arrange the schedules so Dr. Turner and Dr. Hooch are working together. Dr. Turner is played by Jim Hanks, brother of Tom Hanks, who starred in Turner & Hooch.
My Unicorn - S4-E11
Trivia: The scene in which Matthew Perry chases JD with a remote control plane is a play on the famous Alfred Hitchcock movie North by Northwest, in which Cary Grant is chased through a field by a biplane.
Answer: No, it was a fake, they used a stamp.
It is real.