YOU SAID:

i ran to the party and saw nicki gag him

INTO JAPANESE

私はパーティーに走って行き、ニッキーが彼に猿ぐつわをかませているのを見た

BACK INTO ENGLISH

I ran to the party and saw Nicky gagging him.

INTO JAPANESE

私はパーティーに走って行き、ニッキーが彼の猿ぐつわを噛んでいるのを見ました。

BACK INTO ENGLISH

I ran to the party and saw Nicky gagging him.