Grammar Cop: Plural Last Names, Bad Abbreviations, and a Holiday "Reef"

Last week's Grammar Cop post generated some great feedback as well as quite a few submissions of errors readers have found. One was so appalling that I posted it later in the afternoon. As a result, I may never eat boiled peanuts again.

Below are a few more reader submissions. As always, you can submit your Grammar Cop photos by tweeting them to me (@ThomRainer).

Don't use that apostrophe to make a noun plural! (from Bucky Elliott)

CNI? Really? (from Linda Shannon)

Reefs? Must be some kind of underwater decoration. (from Chris Bonts)