I wouldn't touch (something or someone) with a barge pole

I do not want to become in any way involved in or with something or someone. Primarily heard in UK, Australia. Get that cocaine away from me, I wouldn't touch that junk with a barge pole! You might think John is attractive, but I wouldn't touch him with a barge pole. He seems like a creep. Sushi? No way—I wouldn't touch raw fish with a barge pole.