If memory serves, Walt came home with pizza hoping to smooth his way back into the house but Skylar (wife) refused entry. Walt, frustrated, flung the pizza box and it ended up on the roof. It remained on the roof for quite some time (days, weeks) before he finagled his way back into the home. He had to clean it off himself.
Ha-ha! I’m guessing Walt was the younger co-star character.
I could see someone like that, sort of needy, putting himself in that kind of situation.