When something is exceedingly awkward yet somehow strangely arrousing.
"When Jason's math teacher asked him if he knew what a motherfucker was in 7th grade, it was extremely hotkward!"
This is a situation that brings you pleasure and guilt at the same time.
The other day I was rolling down the street and saw these cute girls. As I got closer I couldn't tell if they were of age or not, this was a Hotkward moment