Well I'm not gonna upload every tumblr post ever (cuz that's what the tumblr's for!) but I thought I put up the longer, more crazy ones here for y'all's enjoyment.
I always figured ponies would flip you off the way I see some Europeans do it on TV and in movies... that thing where they flip up their whole arm against their other arm, placed on the inside of the elbow. I guess in europe, when they flip you off, they figure to give you the whole fist instead of just the finger! Ponies flip a whole hoof! The implication... Ouch!