to be done over, to do oneself over, to make a tit of ones self, to slap oneself in the face with his|her own foot, to soil ones pants or generally make a massive mistake in any context.
mate- i've just nozzed myself!
oh shit- i ve nozzed my pants, oh shit ive locked myself out- nozzed mate!!
terds! ive just kicked myself in the face!- NOZZED! NOZEDARRRR!