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.
“In Georgia where children work day and night in the cotton mills they have just passed a bill to protect song birds. What about the little children from whom all song is gone?”
“It all comes down to interest rates. As an investor, all you're doing is putting up a lump-sump payment for a future cash flow.”