be as keen as mustard

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be as keen as mustard

To be very enthusiastic about something. Primarily heard in UK, Australia. These new kids are as keen as mustard to be in the choir, so we can definitely get them to clean up the choir room for us.
See also: keen, mustard
References in periodicals archive ?
MONMOUTH AM David Davies is as keen as mustard to stamp his impression on the Economic Development Committee, of which he has just become a member.
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