Expressions (phrases, clauses, etc.), Godan verb with 'ru' ending
to suddenly assume an antagonistic attitude; to suddenly become defiant; to turn aggressive (in one's manner)
Usually written using kana alone
to moon; to point one's naked buttocks at someone; to give someone the brown-eye
Usually written using kana alone
Also written 穴を捲る【けつをまくる】、尻を捲る【けつをまくる】