-makealawonlytofallfoulofitoneself;becaughtbyone'sownlaws[device];behoistwith[by]one'sownpetard;beinjured[caught]bywhatoneintendedasasnareforothers;dothingsharmfultooneself;getcaughtinone'sowntrap;Harmset,harmget.;Harmwatch,harmcatch.;liein[on]thebedonehasmade;stewinone'sownjuice;Youhavemadeyourbed,youmustlieonit.
