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.
“I've always joked about Joe Montana not appreciating his Super Bowls nearly as much as I do because he never lost one. We lost three before we got one.”
“A nation is formed by the willingness of each of us to share in the responsibility for upholding the common good.”