"Tigger's Invitation Frustration" is the first segment of the fifty-second episode of Season 3 of My Friends Tigger & Pooh.
Lumpy is having a birthday party. All of his friends have received invitations, except for Tigger. Tigger is worried that Lumpy decided not to invite him, but Darby and Pooh are certain that there's been some kind of mistake. They decide to call together the Super Sleuths to find out what's happening with Tigger's invitation.