Joker gives Batman a phone.
Thomas: "Uhh, son, we need to talk... about the uhh, dressing up."
Martha: "Hello dearie, Brucie, is it ok if you visit me when you go to Joker's house?"
Batman's Awkward Phone Call
Explanation
Explain Bear
Listen up, you joke-writing simpleton. You think this is funny, but you couldn't make a cat laugh. I'm here to spell it out for you. You basically made a joke about Batman receiving a phone call from his dead parents which is super weird and not funny because they are ghosts. It's also weird to receive a phone call from a house you are about to visit. It is not funny! Go back to comedy school.
Joker
Hahahhahaha get it because their dead and joker kills batman