Top definition
When a friend asks you to make-out with someone for their birthday.
The person is usually very cute (which makes it a challenge) or not that attractive but nice so they deserve some action.
Claire: "Molly, will you birthday tally Kevin K. for my birthday?"
Molly: "Of course, it might be a bit hard tho cuz he's such a babe and not a manwhore."

by Risque Munsell 7 girls November 04, 2007
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