もりちゃばねでしょう
森茶翅蜚蠊でしょう
moricha banedeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of もりちゃばねごきぶり

1. Probably a cockroach.

Polite
Presumptive
Conjecture
Usually Written in Kana