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3.
Using the Fresh Prince of Bel-Air theme song to break up with someone. (As seen in www.xkcd.com/464)
Now, this is a story all about my life got flipped turned upside down and I'd like to take a minute just sit right there. I'll tell you how I became uncertain about our relationship. I think you just like having a girlfriend, it doesn't matter who. I think we should break up.
The Reverse Bel-Air only works once, so make it unforgettable.
by Jetskirider650 August 18, 2008
 
1.
When you begin a conversation by reciting the opening rap from the Fresh Prince of Bel-Air, but finish with something else, for example, a plea to break up.
Now this is a story all about how my life got flip turned upside-down. I'd like to take a minute, just sit right there, I'll tell you how I was confused by a comic and had to submit a new definition for reverse bel air to urban dictionary.
by Lilyoftheshadow August 19, 2008
 
2.
As a verb, this is when an individual uses the theme from The Fresh Prince of Bel Air as a lead-in to a story or conversation, often a bad one. This is akin to the idea of the Bel Air, but instead lulls the listener into a false sense of security then drops the bomb on their head. This concept was first found in the webcomic xkcd, #464, entitled RBA.
This is how a Reverse Bel Air should work:

Girl: Now this is a story all about how, my life got flipped turned upside down, and I'd like to take a minute, just sit right there, I'll tell you about how I became uncertain about our relationship. I think you just like having a girlfriend, it doesn't matter who. I think we should break up.
Guy: ...wait, seriously?
Girl: Yeah.
by Bisqui[c]k August 18, 2008
 
4.
The Reverse Bel Air is a variation of the Bel Air. You start with the "Fresh Prince" lyrics and, while your target is paying attention and 'open' mentally, you hit them with the heavy news.
http://xkcd.com/464/

She broke up with him in reverse bel air style.
by TixtheCat August 18, 2008
 
5.
Now this is the story all about how my life got flipped, turned upside down and I'd like to take a minute just sit right there. I'll tell you how I became the "Reverse Bel Air" - a story that starts with the first few lines of the lyrics to "Fresh Prince of Bel-Air," but suddenly changes to something shocking, unforgettable, and unrelated to the Prince of Bel Air.
That dude posted about the Fresh Prince of Bel Air on a forum but he RBA'd (Reverse Bel Aired) into a discussion about his gf.
by Julius Davies August 19, 2008