だい爆笑 ばくしょうではありませんでした
daibakushōdewa arimasendeshita

Noun
Desu Copula

The polite, past negative form of 大爆笑

1. Was not roaring with laughter.; Did not burst out laughing.; Was not in stitches.

Past/Perfective
Negative
Polite
Formal Register