Riddle: The only tool which sharper grows...?!

Question: Riddle: The only tool which sharper grows!.!.!.!?

The only tool which sharper grows,
Whenever used in any row!.Www@Enter-QA@Com

Answers:

A sharp tongue, like snappy comebacks or used in the bad way :PWww@Enter-QA@Com

ha your toungue ;)Www@Enter-QA@Com

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