Say What?- G to K

G.
got an iron in the fire

H.
hands down     have an axe to grind     hungry enough I could eat a horse

I.
iron in the fire    it's on me [lunch, dinner, etc.]     it ain't over 'til the fat lady sings

J.
jump through a lot of hoops     johnny-on-the-spot


K. 
knuckle sandwich       knock 'em dead
 
© 2014 Bob Wingate