An exclamation, typical in Lima, OH, used to convey extreme and unconditional rejection of something. It is considered to be a combination of the terms "screw you" and "hell no."
Don't screw a gift horse in the mouth is akin to the time honored phrase "don't look a gift horse in the mouth" which basically means don't be critical of gifts or people might not want to give you things in future.
This promotion is right up your ally Smith, now lets not screw a gift horse in the mouth!
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.
We have a Zoom meeting in a few minutes and I’ll probably go pajama casual.