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.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
float somebody’s ˈboat(informal) be what somebody likes: You can go swimming, hiking or just lie on the beach, whatever floats your boat.
Farlex Partner Idioms Dictionary © Farlex 2017