A revealing of details/reasons as to why something didn't go right due to either the type of screw-head (i.e., you needed a small socket-wrench instead of a Philips screwdriver) or a voodoo curse.
If someone either believes in black magic or doesn't understand basics physics/mechanics, usually any hexplanation will work as an excuse with him.
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.