unmitigated gall 

the nerve or balls to do something.

You have the "unmitigated gall" to strip in public!

unmitigated gall by ntr2012 January 7, 2012

Unmitigated Gall Precision 

Extreme chutzpah,
An overabundance of nerve and gall equated to a sharp shooter.

Unmitigated Gall Precision: The new Supervisor has zero respect. His new rules are the highest level of gall possible! He's overdosing on Unmitigated Gall Precision or UGP.

Unmitigated Gall Precision by Opus Broker August 15, 2018