Acronym standing for "Hoss in Charge". Most have heard of the term "hoss", but HIC is a level above a hoss.
Also, HIC means that you are the best at whatever you do. You have insurmountable ability, and you cannot be beaten.
Please note: A HIC is not a hick, when saying HIC in person, please make sure the person knows you're not calling them a hick, HIC is a compliment.
"Hey Johnny, who do you think is more of a HIC, Peyton Manning or Tom Brady?"
"Holy shit, did you see that hit? Dude is a total HIC."