keen as a bean

Chosen for the rhyme.

• Audio (General Australian):

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(as) keen as a bean (not comparable)

1. (simile, informal) Very keen; enthusiastic; eager.
   • 2018 Alasdair Duncan, Here’s How To Improve Your Pitiful Uber Rating From Someone Who Did It Pedestrian, 17 September 2018. Accessed 4 May 2019.

     On my afternoon trip home, I struck a driver who seemed keen as a bean to get me to mash that five star rating – his Mitsubishi Outlander was stocked with mints and bottled water and he offered them all to me and even asked if I wanted to make any extra stops on the way home.