''Do you think half the time Mark just got bored with being ignored by the characters, so he started doing the most random shit just because, and none of it was actually scripted?'' Yeah, pretty sure it's EXACTLY what happened.
Sensitive Satan "Did it hurt when you fell from Heaven?" <--- You know you are a SPN fan when you see a post of Satan, you get excited, and yell, "Satan!" And everyone in the house turns to look at you funny.