@HDMI1
Well, I'm really disappointed that when the random person showed up, he didn't find Rude eating his ridiculous riceball in front of the snake frozen with his jaw open. It would have been a pretty hilarious nope moment and we all could have pretended he ran away because of the riceball.
Since there's no snake corpse around (and I don't recall item boxes being a thing here), I'm guessing it was given the order to scamper off and it happily obliged after its experience trying to eat Rude.