INTP: *is reading Harry Potter for the first time and keeps reading the Weasley twins' antics aloud and laughing*

INTJ: *also laughing* ''So, are you going to join the Fred Weasley Death Denial Support Group when you finish it?"

INTP: "Yeah, I — what?! He dies?! I didn't know that!" *sarcastically* "Thanks a lot."

INTJ: ''I thought things that lived under rocks knew that!"

INTP: "WELL I DIDN'T.''

~ a few minutes later ~

INTJ: *slides over to INTP* "Hey, you wanna know what happens 
to Dumbledore —''

INTP: "NO.''