Daily check in on my stout, seems to have gotten a bit excited in the night.
E1: Changed out the airlock, sanitized, the whole shebang. Came back 5 minutes later, it happened again lmao. Swapped in another clean airlock, this time with some vodka in it to see if that helps.
E2: Swapped out the airlock again, this time with more vodka, hope that helps keep the bubbles down. This is so exciting!
E3: I've been checking back every hour or so, it's blown over again at least once. I guess I should be happy that my beer is fermenting so actively lol. Looks like I'm gonna be swapping out the airlock every few hours today, until main ferment dies down.
Happened again because in washing you shook thebottle I suppose. It might keep repeating (vodka would make things worse, by making the fluid runnier, it will not stop pressure buildup). Be gentle and let it subside, but it totally can jump again. Worst case - just open it and cover with a tissue against insects. No biological invaders would survive there.
So next time just take larger bottle or consider wide mouth vessel.