Whenever I do an absolute monster turd, I always give the small flush a chance to prove itself. The amount of times the small flush gets the job done is truly remarkable and I always give the loo a little nod of appreciation for its efforts.
@baiteh @darrenhartland @fesshole depends how often monster turds happen? If a small flush uses a (made up) 1/6th of the water of a full flush, but 1 in 4 shits is like King Kong's finger (thanks Inbetweeners) then by doing the ineffective flush first you're using more.
I'm about 99% sure that if the OP reads this, they've probably also kept a spreadsheet of the results and can let me know whether I'm worrying about nothing.