The truth set Amy Poehler and Jimmy Fallon free Wednesday night.<br />The Sisters actress and The Tonight Show host played a revealing game of "Truth or Truth" on the NBC late-night show, in which each participant asked the other to answer a question, well, truthfully.<br />Before they put each other in the hot seat, Fallon told his former Saturday Night Live colleague, "Now, Amy, I consider you a very honest person.<br />After a dramatic pause, Poehler replied, "Truth."<br />Fallon then asked Poehler what her real voice sounds like, which forced her to stop using an American accent.<br />Fallon replied, "A CD case of Bon Jovi 's 2005 album Have a Nice Day , but inside is Green Day s Dookie CD.<br />The Tonight Show Starring Jimmy Fallon airs weeknights at 11:35.