raring to go, very enthusiastic

(literary) footloose, unfixed, with no ties, homeless

trial by fire, acid test

by the fireside

(dated) to see stars after receiving a physical blow / (by extension) to be unable to see the finer details of a complex situation; (particularly) to fall for (a deception), to be taken in, to be totally hoodwinked

to bet one's boots that, to bet one's bottom dollar that

(figuratively) to spark off a crisis, to spark things off, to stir up a hornets' nest, to light the touch paper

(figuratively, informal, chiefly of women) to be horny, to be hot to trot, to be gagging for it, to have ants in one's pants

(figuratively, vulgar, chiefly of women) to be horny, to be hot to trot, to be gagging for it

(figuratively) to use all available means, to use everything at one's disposal, to take advantage of every resource in one's environment, to put everything to good use, to be resourceful