My dad's a police officer and his partner hit on me...?

I'm 18 and my dad's close friend and partner at the police department they both work at was at the restaurant I waitress at and hit on me. He was sitting at the bar, probably had been drinking, and called me over when he saw me. We were talking about me going away to college in September when he put one of his hands on my hip nearly touching my butt and said something about moving on to more experienced guys in college. I pushed his hand away with mine and he held onto it for a couple seconds before i pulled it away and told him I had to get back to my tables. As i was leaving he said something like, "it's okay, don't mind if i watch you leave." It was super awkward and I don't know if i should bring it up to my dad because it would be uncomfortable and could start big problems because they're close and work together. Also, he could have just been drinking and messing around. I don't want to make a mess of things and turn nothing into a big deal. But i do feel like i should say something since he hangs out with my dad around our house often. i don't know; i'm torn. Advice?