That Awkward Moment When...

Literally way too sensitive!!. I turned up at a class at university that wasn't my class!!. But let's be honest here!. Students don't study each other in such a big university, lecturers rotate, nobody truly knows who anyone is unless they are part of their group!. I went into a room, my lecture had been in for the past three lectures. But when I sat down I found out...it was not on this day apparently??. It was in a different location on the last day of the week!!. Here's my problem though?. I generally sit alone, introverted like I am. I don't know many in my true class, so any class is accessible to me. I sat in the second back row, like a bench whereby I couldn't even make a quick getaway with students on either side. Then when they got their laptops out, and the lecturer said "So Welcome to Economic history!, just want to make sure we're all good?, everyone is in the right place?.....I then checked the number of room on my timetable an though "sh*t"..I can't be the only one!!. Right I'm blocked in!!!. I'm not embarrassing myself either??..but I'm specialising in zoology, and currently supposed to be sitting down in a chemistry class!. Anyway, I lay low!!, listening to Economic History stuff, like a spy 🤣🤣. Then I heard him asking people what year they were in? Some 3rd Some 4th...and I was like sh*t...not only is it totally different, but I'm only a 1st year student in what I'm doing. Then things started popping into my head. What if he puts us into groups, and I need to be 4th year genius at this??..what if he asks me a question. Right???..just lay low and listen!!. (Which was kind of hard, cause I set my self dead centre of the second back row for the class I thought it was, the lecturer had me with precise eye contact 😅!. Then as i checked my phone for finishing. My class would have finished in an hours time, I came to realise, these 4th years where only stopping for a 5 minute break, the lesson was longer!!. So I made a move, pretended I had a call!, took the less crowded route out..and escaped...an hour undercover 🥸 😎 🤣🤣...Well I wasn't going to say!!, how embarrassing 😳 🫣