heffalump trap (English, noun)
expansion: heffalump trap (plural heffalump traps)
Senses:
glosses: A situation where an attempt to trap or outwit someone ends up backfiring on the original schemer.
tags: idiomatic
glosses: A strategic move that ends up ensnaring those who devised it.
tags: idiomatic
Forms:
form: heffalump traps
tags: plural