be another/one of life's great mysteries

humorous

to be something that it is impossible for you to understand.

Why people write their names on the walls of public toilets is one of life's great mysteries.

• make a production of
• make a production of something
• make a production out of
• make a production out of something
• make a quick buck
• make a rod for own back
• make a rod for your own back
• make a run at
• make a run at something
• make a run for it
• make a scene
• make a song and dance about
• make a song and dance about doing something
• make a song and dance about something
• make a spectacle of
• make a spectacle of yourself
• make a splash
• make a stab at
• make a stab at doing something
• make a stab at something
• make a stand
• make at home
• make a virtue of necessity
• make a weekend of it
• make a world of difference