Sh*t happens just ignore him. Had similar situations myself in the past, mainly when I was in my late 20's and I used to drive a JDM Impreza with a straight through 3" exhaust system.
Had one guy walking with his Mrs jump out in front of my car as I accelerated up a hill in second gear.
"Slow down" he shouted, so I stopped as he was partially in the road as well.
Getting half out of the car (bit annoyed now as well) I shouted back "what's your problem?!"
"Speed limits 30!" he yelled, to which I replied "good to know, I was only doing 25 you pr*ck"
We then parted ways and that was that.
I know I probably could have handled it, shall we say more politely but tbh he wasn't the first person to yell or give me a horrid look whilst driving that car whilst still under the speed limits & in safe situations. Felt a bit victimized.