when (one's) boat comes in
when (one's) boat comes in
At or by the time that one becomes wealthy or successful. The first thing I'm going to do when my boat comes in is move out of this disgusting little apartment! They're a very talented animation studio, and I think they'll do great things when their boat finally comes in.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.