The title is self explanatory. If you want to use it, please note that changing the costumes a tiny bit still is kind of cheating, so PLEASE give me credit if you are. P.S. It wouldn't be that hard to make yourself.
I just made some different costumes, such as the o noise and a few costumes for him closing his mouth, and then have him change costume randomly after a few seconds. This is all mine. This is not like a "custom" animation; it could really be used for anything.