My sister likes to use "ck" as a shortened form of the word "check", as in, "I'll ck on that as soon as I can."  It's annoying.  Please stop. 

For one, the word "check" is already short enough.  It's five letters long.  Did we really need to invent a word to shorten a five-letter word?  I don't think so. 

Second of all, you're the only person in the universe who uses this shortened form.  It's not common among the general population like "IRS" or "CNN".  It's not even common with the young kids with their "lol" and their "cya".  Nobody knows what "ck" means.  Every time we read it in one of your emails, we have to stop and analyze the context clues in the sentence to determine the word's meaning. 

Third, it's the only word you chose to shorten.  It's not like you made up this whole shortened language where every word longer than four letters has a shortened form.  Nope.  You write everything normal, and then spring a "ck" out of nowhere.  This is unacceptable.  Please stop. #language