一いっ杯ぱい食くわす

expression, godan verb (-su)

play a trick on; cheat; deceive; dupe

Idiomatic expression meaning to trick or deceive someone, often in a cunning or underhanded way. Conveys a sense of pulling one over on someone.

• 彼かれは友ゆう人じんを一いっ杯ぱい食くわして、お金かねをだまし取とった。

  He played a trick on his friend and swindled money out of him.

• まんまと一いっ杯ぱい食くわされた。

  I was completely duped.