Definition: In this task, you are given a Reddit post as a text. Your task is to generate a title for this text. The title should start with "TIFU by", followed by a situation that caused humor. The title should contain 7-12 words, ideally.
Input: Text: since grub prioritises ubuntu over windows, i had to stay by my computer for the entire upgrade, just to start windows instead of linux on every restart.

TIFU: by upgrading Windows on a computer which dual-boots Linux Ubuntu.