Reminders of how one was stupidly crass? (5)

I believe the answer is:

scars

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'reminders of how one' is the definition.
I can't tell whether this defines the answer.

'stupidly crass?' is the wordplay.
'stupidly' indicates anagramming the letters.
'crass' anagrammed gives 'SCARS'.

'was' acts as a link.

Can you help me to learn more?

(Another definition for scars that I've seen is " Marks left by wounds".)

I've seen this clue in the Evening Standard.

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