What is Harang?
1.
To annoy or nag about something.
"Don't harang me about these things."
"Well they are haranging ME."
-Iron Man
See
2.
Misspelling (sometimes intentional out of ease) of
In this usage it is usually playful and friendly banter suggesting the other person forcefully remind them later of their failings.
If used in reference to other people (particularly a work superior) it usually delicately and formally suggests the other person was being irritable/annoying in a way that is not
"I have a meeting to go to, harang me about that letter later."
"Colleague1: Simon was haranging me over that corporate newsletter.
Colleague2: Ignore it, he was just mad it didn't have his name in it."
See