Derived from a popular childrens action series power rangers Bowa is typically a battle cry. It is often used to show aggrivation/dismay at ones misfortune, or to show humour at someone elses.
Adam: 'AWH NAH! This mathstest is solid I can't do it.
Peter: 'Me Neither'
Adam: 'BOWA!!!'
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.