Because I'm lacking inspiration and can't come up with anything else, here's another one.

Thank you to the wonderful people of http://reddit.com/r/mylittlegifsounds.

SOURCES:
Pinkie getting into the swing of things - Astronelson
PARTY HARD - Bronyist
I feel bad for making this but fuck it - z0ef
Mospike! Mospike! - Marchinghammers
Jockey Luna - Kalix
LOL SCOOT - the-Lexus-guy879
Umm.. I won't do what you tell me...if that's ok... - gildedlink
Come on EveryPony, Just Smile! Smile! Smile! - UberMonkey21
FLUGELHORN!!! - SthaAmanM
TL;DR - [deleted]
Surprise! - z0ef
Mother of god - Ledizz
FlutterRazor - the-Lexus-guy789
no idea i just felt like this worked - anime_nut
Party Hard - mushl3t
dance - anime_nut
Celestia Rolls Around Pretty Quickly - VoidStatic
Cutie Derpcrusaders - Ledizz
Move your body - the-Lexus-guy789
Extreme Reading! - Kyderra
Pinkie Macarron - Lunas_Acolyte
AAAAAAAAAAAAAAAAAAAHHHHHHHHH - z0ef