RTFM vs. CMFS

Sometimes you just have to be careful telling people to RTFM, as this Slashdot post shows:

The most hilarious story I have is when my dad called my about eight years ago at work. He was using Quicken and wanted to know how to make a "new Quicken for your aunt." I had never used it at the time, so I said, "Okay, look under the 'file' menu. Is there something there that looks like 'New' or 'Create new?'"

Yes, there was, and my dad selected it, and made a new account for dear Aunt Nan. Then I told him, "Dad, what we have here is your basic RTFM problem."

"RTFM? What's that?"

"That's 'Read The Fuckin' Manual', dad." (my dad is tough, he can take it)

My dad paused and said, "Well, I just decided to CMFS."

Which baffled me. "What's that?"

"Call My Fuckin' Son"