Have you guys ever heard of firm verbal commands, tactical flashlights, and pepper spray?! I've said it before and I'll say it again, if all you carry is a deadly weapon, then if the situation was one that a deadly weapon is excessive, you would be left with nothing to defend yourself. BEFORE you carry a gun, carry pepper spray. Before you carry pepper spray, carry a tactical flashlight. Before you carry a tactical flashlight, learn to de-escalate situations with a firm voice, body language, an apology, etc. If you can't carry all that with the gun, then go WITHOUT the gun or just carry a mouse gun.
Just like the old adage, "Don't take a knife to a gunfight," here's an additional one for you, "don't take a gun to a word fight," or, "don't pull out a gun at a food fight," etc.
I've had a similar situation happen to me before. I was at a drive through at night and some goober WALKED towards my car at night. I saw him in the rear view mirror. So, I shined my tactical flashlight in his eyes and asked, "What do you want?"
"Sorry, I snuck up on you," he replied as he left.
Although there's no legit reason to WALK towards someone's car at night that's parked in a drive through, pulling a gun on him would've been excessive as he has not presented deadly force so there's no justification to put deadly force into the equation. No need to ESCALATE a situation that could've been DE-ESCALATED.
Stay safe y'all,
Remember, what gun/caliber you carry is not important. The most important weapon is the grey stuff in-between your ears. A gun is least important for self-defense because its usage is only in the gravest extreme as a LAST resort.