おういぬのいんのうであれば
大犬の陰嚢であれば
ō inuno innōdeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of おおいぬのふぐり

1. If it were the testicles of a large dog.; If it were a large dog's scrotum.

Ba Conditional
Usually Written in Kana