Hoving is an add-on for when you call someone an idiot.
You could say it nameless... like: You're such a hoving, but its more fun to call someone, for example someone called Arjan: You're such an Arjan hoving.
When someone pays too much attention to another person with the goal being to get boned. Somewhere between hovering over and stalking.
Did you see Dave hoving on Karen at the party last night? She should have either punched him in the balls or given him a BJ.