na krzywy ryj

Etymology
lit. 'on [an] ugly face'. From prison slang, popularized by the 1997 album Na krzywy ryj by the band Elektryczne Gitary.

Adverb

 * 1)  without prior permission, uninvited
 * 2)  not fully legal
 * 3)  without adequate preparation
 * 1)  without adequate preparation