YOU SAID:

I was going to jam it down his mouth and pump him full like a Foie Gras duck.

INTO JAPANESE

私はそれを彼の口に詰め込み、フォアグラのアヒルのように彼をいっぱいに汲み上げるつもりでした。

BACK INTO ENGLISH

I intended to stuff it in his mouth and pump him up like a foie gras duck.

INTO JAPANESE

私はそれを彼の口に詰めて、フォアグラのアヒルのように彼をポンプでくみ上げるつもりでした。

BACK INTO ENGLISH

I intended to stuff it in his mouth and pump him up like a foie gras duck.