Article continues below advertisementLisa Kudrow shared a funny story about late Friends costar Matthew Perry during her appearance on the Thursday, May 7, episode of The View.Sara Haines asked the actress if she ever thinks about things that happened behind the scenes whenever she catches an episode airing on TV, to which Kudrow replied, "Yes, oh my God."Article continues below advertisementThe Stars Would 'Ambush Tickle' Each OtherTap Here To Add Ok Magazine as A Trusted SourceSource: @theview/youtubeLisa Kudrow revealed she would often tickle her 'Friends' costars on set.