A birthday deal is an agreement made between a guy and his girlfriend/wife. Every year, on Partner A's birthday, Partner B will do what's agreed upon in the birthday deal. Partner B will likely agree to the terms of the birthday deal in exchange for having his/her own.

The birthday deal was introduced nationally on the second episode of Rules of Engagement called, "The Birthday Deal."
Woman- "For my birthday deal we're gonna get mani's, pedi's, facials and then watch romantic movies till I fall asleep in your arms. What do you want for your birthday honey?"

Man- "Oh you'll be getting a facial alright..."
by nakedlove April 7, 2010
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A Birthday deal is where a woman agrees to have sex with a man, but only once a year.. On his birthday.
"But what about the birthday deal?" Say's Matt
"Damn it! You've got me!" Says Kelly ann
by Supermanxx123 March 18, 2008
Get the Birthday deal mug.
A Birthday deal is where a woman agrees to have sex with a man, but only once a year.. On his birthday.
"But what about the birthday deal?" Say's Matt
"Damn it! You've got me!" Says Kelly ann
by Supermanxx123 March 18, 2008
Get the Birthday deal mug.