Attended the wrong uni class until mid-terms.
Handed in like a 30 page mid-term assignment and the professor made a big scene and humiliated me in front of the entire class. Ended up having to drop out for missing the class I didn't attend.
Never got any emails or notifications about it, and I have a feeling the professor figured it out beforehand and never told me, and kept it going long enough literally just to humiliate me.
