“I worked on the laugh walking around the streets of New York and Toronto, and I kinda would walk around the streets and see what laugh would get under people’s skin. You know when you hear someone laugh at a restaurant? It’s a little jarring. I tried them out. And I kind of got to a place where I would laugh and people are always turning around like, ‘Who is this creepy guy behind me?'”
– Jared Leto, on how he developed his Joker laugh for The Suicide Squad.