First, there's the friend who just adores to speak with unpatriotic English spelling.
I'm sorry. As we are here in America, such nouns and adjectives you speak of do not exist. Please try again *click clack click*
Message Received: I realise now that I like grey aluminium armour. Grey is my favourite colour and is a favourite in my neighbourhood.
Then there's the obligatory friend who types in "stupid" all the time.
HAY LIEK OMGWTFLOLBBQ WALMARTAHNULD GOVERNATORLOLZ *yawn* Shut up and die *click clack click*
Message Received: hAy I lIeK tEh UbEr1337 StUfFz LoLz!1!
Lastly, we have the CLEVER angsty friend.
One, two-worded imperative clause: GROW UP.
Message Received: So many problems, nothing's going right, I wish I could just die because I'm too lazy to actually get outside and DO or SEE things a little differently. Woe is me.