I found this background useful as a non-native speaker: https://en.wikipedia.org/wiki/Hoist_with_his_own_petard https://en.wikipedia.org/wiki/Hoist_with_his_own

I found this background useful as a non-native speaker: https://en.wikipedia.org/wiki/Hoist_with_his_own_petard https://en.wikipedia.org/wiki/Hoist_with_his_own_petard