じゃんけんでしょう【
じゃん拳でしょう
】

jankendeshō

Noun

,

Desu Copula

Expresses probability in a polite manner ("probably…") of じゃんけん

1. Probably.; Most likely.; It seems likely.

Polite

,

Presumptive

,

Conjecture

,

Usually Written in Kana