be before (your) time

if something was before your time, it happened before you were born or before you were involved with a person or thing.

'Do you remember the Watergate scandal?' 'No, that was before my time.'

• a mess of something
• a middle-aged spread
• a mile a minute
• a mile away
• a mile off
• a millstone around neck
• a millstone around your neck
• a mind of own
• a mind of your own
• a mine of information
• a miracle-worker
• a misery guts
• a miss is as good as a mile.
• a mixed bag
• a Monday morning quarterback
• a money-spinner
• a monkey on back
• a monkey on someone's back
• a monkey on your back
• a mother lode of
• a mother lode of something
• a mother's boy
• a mountain to climb
• amount to
• amount to a hill of beans