Keen as 

Adjective - Very eager, enthusiastic or interested. Derived from the oratorical marriage of the terms 'keen' and 'as' (A common suffix used in many New Zealand slang, such as 'Sweet as' and 'Mean as')

Yeah I'm keen, keen as" or "Yeah bro, I'm keen as on Tina

Keen as by SonnyBill December 2, 2010

Keen as mayo 

To show no interest or concern for an activity.

The opposite of the phrase 'keen as mustard'.

The phrase is believed to come from the fact that mayonaise is the opposite to mustard. They are both condiments but mayo is to an egg what mustard is to a seed.

Person 1: Have you written much of your essay?
Person 2: Nope, I'm about as keen as mayo, all I've done is plagiarise 2,000 words.

Keen as mayo by DennisCarbon August 28, 2011

keen as mustard 

extremely enthusiastic, delightful

RiCHARD SIMMONS WAS AS KEEN AS MUSTARD TO LAY OUT A WORK OUT PLAN FOR HIS FAT CLIENTS

keen as mustard by ONERY January 19, 2009

keen as cheese and mustard 

To be excited and/or show agreement towards participation in an upcoming event

All over gang member 1: "Halo?"
All over gang members 2+3: "Halo!"
All over gang member 4: "I'm as keen as cheese and mustard to play Halo"
All over gang member 1: "Then let's play"

keen as cheese and mustard by Captain Rough Around The Edges October 25, 2006

Keen as a bean 

Keener than mustard. Keener than bees on toast.

DAMN KEEN

Yeah broface, she's keen as a bean

Keen as a bean by Michelle O'Canoli June 17, 2010

Keen as curry

Very keen, eager.

In Australia, Keens brand of curry is a household name.. When someone is keen for something they say "keen as curry".

Im "keen as curry" to go fishing this afternoon.

Keen as curry by Timo_ed123 January 11, 2012

Keen as bees on toast

a state of super excitement about an event or activity. An advance on the phrase keen bean as the thought of bees on toast makes it more extreme and dangerous.

Example 1:
Boy: Want to go out drinking?
Girl: I am keen as bees on toast to have a night out drinking.

Example 2:
"Michelle is keen as bees on toast for some gherkins"

Keen as bees on toast by KeenBee March 27, 2010