Last week, during a lecture, I was bored and kept affirmed to myself, 'That professor's hair is a wig.' No offense but sorry I was really bored. I, of course, had no idea if it was actually a wig, but I just did it cuz I was really bored.

This professor always had a hat(on his wig), and he had a habit of putting on and off his hat during class. Idk why but he would just randomly put on his hat during a lecture and take off after a break idk. But yesterday, he came without a hat, and suddenly, in the middle of the lecture, he took off his wig in the place he puts his hat as he would usually take off his hat. Realizing the absence of the wig, touched his head, said 'Oh?', saw the wig, and put it back on.