Top Definition
When you are in such a hurry for someone to give you something that you don't have time to say please and thank you so you say plank you.
Wife: OMG, Desperate Housewives is starting in 2 minutes! Give me the remote!
Husband hands it to her.
Wife: Plank you.
by Summer A.J. August 09, 2008
5 Words related to Plank you

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