Matthew Perry doesn't remember three years of Friends because he was "a little out of it".
The 46-year-old actor - who has previously suffered from drug and alcohol addictions admits his memory of portraying Chandler Bing in the popular sitcom is a little hazy from series three to six in the late 1990s.
When asked about his least favourite Friends episode, he said: "I don't remember three years of it, so none of those.
"I was a little out of it at the time ... Somewhere between seasons three and six."
Matthew's Friends co-stars Jennifer Aniston (Rachel Green), Courteney Cox (Monica Geller), Lisa Kudrow (Phoebe Buffay), David Schwimmer (Ross Geller) and Matt LeBlanc (Joey Tribbiani) are set to reunite on stage in London for a pre-recorded segment on Must See TV: A Tribute to James Burrows.