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Dasey is the word used when talking about Derek Venturi and Casey McDonald (of Life with Derek) in a romantic way. It can be safely said that Dasey is the most popluar and talked about pairing regarding the show.

The conversations Derek and Casey have are always full of UST. They have such great chemistry.

Other pairing include Masey, Trasey, Nasey(which is probably the second best along with Lizwin), Dally and Dendra but everyone knows that Dasey is the best. All Dasey fans hope that one day Derek and Casey get together.
Dasey should happen, after all they're not blood related-STEP-siblings -and their parents got married when they were 15! So they didnt even grow up together.

"Did you see that Dasey video on youtube?"

*squeals* "Dasey Moment!"
by dasey_101 October 28, 2010
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The term used to define the pairing of Derek Venturi (Mike Seater) and Casey McDonald (Ashley Leggat) on Ca Family and Disney's Life with Derek, the UST filled step-siblings who constantly fight with such passion behind them. Many teens watch this show simply to scout out the dasey-filled moments and after each episode hope to gain assurance that the writers haven't ruled out this idea.
Derek always finds a way to touch Casey repetitively and make her happy by the end of an episode, proving how much he likes her and how dasey is meant to be.
by Alyssa M. February 07, 2008
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The term used to define the pairing of Derek Venturi (Mike Seater) and Casey McDonald (Ashley Leggat) on Ca Family and Disney's Life with Derek, the UST filled step-siblings who constantly fight with such passion behind them. Many teens watch this show simply to scout out the dasey-filled moments and after each episode hope to gain assurance that the writers haven't ruled out this idea.
Derek always finds a way to touch Casey repetitively and make her happy by the end of an episode, proving how much he likes her and how dasey is meant to be.
by Alyssa M. January 05, 2008
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4
The term used to define the pairing of Derek Venturi (Mike Seater) and Casey McDonald (Ashley Leggat) on Ca Family and Disney's Life with Derek, the UST filled step-siblings who constantly fight with such passion behind them. Many teens watch this show simply to scout out the dasey-filled moments and after each episode hope to gain assurance that the writers haven't ruled out this idea.
Derek always finds a way to touch Casey repetitively and make her happy by the end of an episode, proving how much he likes her and how dasey is meant to be.
by Alyssa M. February 07, 2008
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Get a Dasey mug for your Facebook friend Günter.