not float (one's) boat

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not float (one's) boat

To not be particularly enjoyable, desirable, or exciting to someone. A: "They're showing Casablanca in the student theater, do you want to go?" B: "No thanks, black and white movies don't really float my boat." Well, the thought of spending my weekend weeding the back yard for a few bucks doesn't exactly float my boat, Dad.
See also: boat, float, not