Idiom 5: Botch up

어떤 일을 망쳤을 때 쓰는 표현입니다.

botch up = make a mess of = destroy or ruin = screw up = mess up = ball up = blow it

Did a CPR (Cardio-Pulmonary Resuscitation) botch up kill Michael Jackson?
http://woodenspears.com/did-a-cpr-botch-up-kill-michael-jackson/