羽は目めを外はずす

expression, godan verb (-su)

go over the top; cut loose; act without restraint

Idiomatic expression for letting loose, especially in a social or festive context, often implying a temporary loss of self-control.

• 忘ぼう年ねん会かいで羽は目めを外はずして、翌よく日じつは二ふつ日か酔よいだった。

  I cut loose at the year-end party and had a hangover the next day.