Character mistake: In season 5, My Transition, Kim mentions that on her 1st ever 1st date, she sat in the back seat of her boyfriend's Miata, but that car is a 2 seater - there is no back seat.
Continuity mistake: Season 5-24, Episode: My Transition (1). The first time we see J.D. and the flyer about his deck, the flyer has a picture of J.D. looking straight ahead smiling and the writing on it reads "Old? Gay? Like Decks?" After J.D. rips the flyer off and shows it to the janitor, the picture of J.D. has changed to him giving a thumbs up and the writing has also changed to "Come and Chill at my big gay deck."
Answer: No, it was a fake, they used a stamp.
It is real.