Based on the Übermensch or its rough translation to superman from the writings of Friedrich Nietzsche, the Ubercunt is a super cunt. The Ubercunt is a woman who has become so incredibly bitchy, mean spirited and evil that she's evolved beyond a mere cunt.
Your friend Laura is such an Übercunt no manwill ever put up with her.
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.