Movie quiz!

[Greg Truby]

Alphabetspeak really annoys me, and it's really annoying when you ask the perpetrator what it stands for and they make out like you're stupid for not knowing. ...People make them up as they go and treat you like an idiot if you can't figure it out.

Erm, I don't think Oorang was tryin' ta make us feel 'toopid. Frankly it ain't all dat hard ta make me look a little slow on the draw anyhow.

 

[Oorang]

lol /me shares your loathing for Alphabet speak, I was just being lazy, cause it's the lounge. If you care, a full explanation follows

In this case RFC is used more often then it's meaning. Sort of like ANSI. In fact when you asked, I had to look it up, because I really couldn't remember what it stands for anymore (It's Request For Comments if you're interested.)
At my last job I had care of a database used by the marketing department. We did a lot of mass email to our clients and they were complaining that the call center people were making keying entries which led to invalid addresses. So I went down a little rabbit role of validating said. Since there isn't really a way to test emails for validity other than self reporting, I thought at minimum they should at least be possibly valid. A little digging around came up with RFC 5322 Section 3.4.1 which spells out what the syntax an email address must conform to for the protocol. Since it was Access, I ended up using an input mask. This is what I came up with then, I haven't really tried to work on since then:

[Email]="" Or [Email] Is Null Or ([Email] Like "?*@?*.?*" And LenB([Email])>8 And LenB([Email])<102 And (LenB([Email])-LenB(Replace([Email],"@","")))/LenB("@")=1)

But if you are working on a web site, you would probably be using RegEx (Regular Expressions) to solve the problem with a little more flexibility and accuracy (Example here).