something that you say which means that you must do something immediately because you will not get another opportunity.

As she was leaving I thought, it's now or never. So I just went up to her and asked her out.

• It's a long story.
• It's an ill wind .
• It's an ill wind that blows nobody any good.
• It's a small world.
• it's a wonder
• it's a wrap
• It's breaking my heart!
• it's curtains
• It's different strokes for different folks.
• It's do or die.
• it's do or die
• it's early days
• it's early days yet
• It's easy to be wise after the event.
• It's every man for himself.
• It's feeding time at the zoo!
• it's funeral
• it's high time
• It's just not cricket!
• It's just one of those things.
• It's just one thing after another!
• It's more than my job's worth.
• It's no good crying over spilt milk.
• It's no skin off my nose.
• it's no skin off nose