Extremely long and fat dildo, typically beyond anything human.
I bought my girlfriend a kong dong for her birthday. She squealed like a pig and stuck it all the way up herself. Looked like she had a leg shoved up in there.
A nasty - but fortunately fictional - venereal disease mentioned in dirty jokes; which causes one's dong to rot and fall off after a few days.
"You Western doctors always want to cut, cut, cut! No need! That not how we treat Hong Kong Dong. You wait two, maybe three days, he fall off all by himself."
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.