Sam is sitting in a local library trying to do research on the creature Him and Dean are hunting.It's hard for Him to focus when Lucifer is watching over His shoulder and annoys him 24/7 to slowly drive Him insane in His mind.You are sitting 5 tables away from Him and hear Him talking with air

Sam: "Shut up and go away...I need to focus...On this damn research..."

Lucifer: "Wow...That's no way to talk to Your friends Sammy...I think You just hurt my feelings...If i actually had them...I dont think i like You anymore..." He pouts in His seat and turns away from Sam