Eeyore’s Tailiversary is second segment of the twentieth episode from the first season of The Book of Pooh. It originally aired on February 10th, 2001.
Rabbit sets the gang in pairs to make a surprise party for Eeyore to commemorate his Tailiversary – the anniversary of the day he got his tail. As Eeyore keeps showing up, Pooh and his friends get so desperate to keep everything secret that they end up damaging the gift (it gets crumpled when Owl sits on it to hide it), the decorations (which have faces drawn on them so Pooh and Piglet can pretend to be balloon heads) and the cake (when Tigger and Rabbit run out of icing because they keep putting it in their mouths to stop letting on to Eeyore). However, Eeyore couldn't care less.