All of the other reindeer used to laugh and call him names. They never let poor Rudolph join in any reindeer games.
11 seconds sound clip from the Rudolph the Red-Nosed Reindeer and the Island of Misfit Toys movie soundboard.
You can hear this line at 00:05:29.337 in the DVD version of the movie.
Quote context
[...]
- It all started at the Christmas parade.
- You know Dasher, and Dancer, and Prancer and Vixen, Comet, and Cupid, and Donner, and Blitzen.
- But do you recall the most famous reindeer of all?
- Rudolph, will you do the honors?
- I tell ya, the joint was jumping with hobnobbing elves, and revelin' reindeer. What a shindig!
[...]