Adventures with Harlan, Part II:

(whilst on a crowded, very quiet train)
Harlan: Hey dad, could people look at porn in the library?
Dad: What?
Harlan: Can people look at porn in the library?
Dad: What? Sorry, I can't hear.
Mom: (loudly) Porn, he's asking about porn!
Dad: What?
Mom: (shouting) Porn! He wants to know about porn!