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: so i have been going to a taekwondo academy for almost a year now.  i really enjoy it, and have been motivated to reach black belt status.  i just passed the test for my green belt; about halfway to black.

the week after the test, (today) there is a ceremony where all the students are presented with their new belts for the next semester.

i knew that i was going to miss that day for personal reasons, but forgot to let my senior master (leader of the school) know.

according to a friend of mine who was there, senior master was furious and almost tore my certificate to shreds.

so now, i have pissed off a 5th degree black belt in taekwondo with 50+ years of combat experience.  probably won't be rejoining next semester..

TIFU by forgetting to state my absence ahead of time.