Top Definition
A spoonerism for "fairy dust". See definition of spoonerism.
That sticker looks like it's covered in dairy fust!

The dairy fust in my vajayjay is real itchy, I need a shower.

I found dairy fust in your boxers! You betta not be cheatin!

You: Ke$ha is awesome!
Me: Her? She's the dairy fust queen.
by Grammre Natsi October 27, 2011

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