I've been monitoring the exchanges in this phread for the last couple days; I need to make a few corrections to y'all Bronies on your vernacular:
First, when discusing the princible characters of the show, they are collectively called "The Mane Six" or just "mane 6" for short. You shouldn't use the word 'main'.
The term 'tongue in cheek' should be re-worded to "Hoof in Mouth". Sure that is actually a disease in the RL, but it serves the purpose for chit-chatting on forums.
There are many other catch phrases that are being used most splendidly, so keep them up. Some of these are: 10 seconds flat, 20% cooler, so awesome!, love and tolerate, confound these ponies!, Eeyup, Ooh Muffins!, Yay!, Okie dokie lokey, Forrrreverrrrr!, Oatmeal! Are you crazy?, Oh my gosh oh my gosh oh my gosh, ponies are crazy!, Dear Princess Celestia, This is whining, It... is... on..., Great and Powerful (Trixy), Friendship is (fill in the blank).