ぎゃく噴射 ふんしゃじゃなかったです
gyakufunshajanakattadesu

Noun
Desu Copula

The polite, past negative form of 逆噴射

1. Wasn't reverse-ejecting.; Wasn't backfiring.; Wasn't spraying backwards.

Past/Perfective
Negative
Polite
Casual Register