けつをまくる
ketsuo makuru

Godan Verb (ru)
Expression

1. to suddenly assume an antagonistic attitude; to suddenly become defiant; to turn aggressive (in one's manner)

Usually Written in Kana
Godan Verb (ru)
Expression

2. to moon; to point one's naked buttocks at someone; to give someone the brown-eye

Usually Written in Kana
Other forms: