float somebody's boat

float (one's) boat

To make someone happy. Often used in the phrase "whatever floats (one's) boat." A: "What do you want for dinner?" B: "Whatever floats your boat, I'm not even hungry." I think this new job in the lab will really float Isabel's boat.
See also: boat, float

float somebody’s ˈboat

(informal) be what somebody likes: You can go swimming, hiking or just lie on the beach, whatever floats your boat.
See also: boat, float