As they say, there are two rules in improv: Never say no, and never ask why. When another actor asks 'Why?' or says no to something you're suggesting, then it's very clear that they're putting the onus on you, because they're not comfortable with it themselves.
“If all the cars in the United States were placed end to end, it would probably be Labor Day Weekend.”
“And of course Marc Cherry heightens it and makes it hilarious. But there's so many universal themes in the show, and he made it so funny. We knew he was onto something if he could keep it up and, thankfully, he did.”