I like people who threaten me verbally. I just look them in the eye, and ask them if they would care to repeat it. Most of the time that is all it takes. Now I am not the biggest guy around but I am 6-4 and 200lbs, and have had more than my fair share of crap in my life that has given me the ability to put on a look that makes people think twice.
Press charges, naw, have some fun with the guy, oh yeah.