Alison Hammond was in absolute hysterics on Friday's This Morning during an interview with Barry Humphries.Barry, 87, joined Alison and her co-host Dermot O'Leary in the studio to discuss his upcoming tour The Man Behind The Mask.However, the chat took a rather awkward turn when Barry got confused and thought Dermot was actually Phillip Schofield."Well I've got a very good memory Dermot, a very good memory, and incidentally I want to congratulate you by the way, seriously, on your courage," Barry told Dermot.As Alison cracked up laughing, Barry continued: "Last year, no, no, when he came out and told us about his sexuality."Alison's laugh got even louder and Barry looked rather confused as Dermot smirked."No, no, because I think a lot of