A sexual act during which one person inserts a hot straightening iron up the other person's rectum. When the other person opens their mouth in shock, the top immediately inserts their erect penis into the other person's mouth and demands oral sex while turning up the heat on the straightener. As the other person vigorously performs fellatio in order to make the receiver cum faster, finish off by removing the straightener from the persons ass and straightening their hair while stroking their head.
My bowel movements were completely messed up following that chi.
At least my hair looked good after that chi.
I was chi-ing him, when the dog walked in.
He seems like he'd be into chi.