I have a manager who has a habit of creeping up very quietly behind me and other colleagues as we're working, then saying whatever he wants to say once he's very close. He seems to think it's amusing and gets a kick out of it if he startles people.
I usually have my laptop positioned so I can see him approaching, but he has startled my colleague and when she's kind of laughed it off he's said 'ah yes I've been told I can move very quietly... I'd make a good cat burglar' or something to that effect.
Today he came from another angle so I didn't see him, but I sensed him and didn't give him the satisfaction of jumping.
There are a lot of other issues with him and I wonder how long he's got in the organisation but this is one particular habit of his that genuinely creeps me out.
How do I deal with this in a way that doesn't make me look bad or gets him offside (he's spiteful.) I could go to HR, or I could bring it up with him, but I feel like it's something that is better dealt with in the moment, a blunt statement that makes him realise he's being inappropriate so he thinks twice about doing it again.