Reasons for being realistic about your parental ambitions
Don't put your daughter on the stage, Mrs Jones
You’re sure that she should be a deep sea diver
As you can see, the problem with this is that a 'deep sea diver' has nothing whatsoever to do with being on the stage. However, seeing as you're just being awkward in insisting on a perfect rhyme, it will have to do. Honestly, some people.
(Here's Mr Coward singing his song if you'd like a listen)