make hay while the sun shines

cannot make it

Cannot reach satisfactory or expected standards or do something competently; describes someone in a hopeless situation.

catch the sun

To sunbathe.

Currant bun

[Cockney slang]sun or The Sun newspaper

day in the sun

A time of glory or ascendancy.

doctors make the worst patients

It is difficult to advise people on subjects that they are experts on.

enough to make a cat laugh

Very outlandish or outrageous.

enough to make the angels weep

Something so distressing that it causes one to lose hope and faith.

fine feathers make fine birds

Something that appears beautiful or good is by definition beautiful or good.