You need to remind him that you are on a jobsite and not a playground. If that doesn't get his attention then a phone call to his employer should do the trick. Try to resolve it amongst yourselves first and try to use the employer as a last resort; although some people never learn....especially mixer drivers.

i would pull out my knife and cut the hose wont be the first or last. I have no tolerance for people like that. Dont respect me i wont respect you.