I remember in college, someone left his/hers C assignment source code in the lab (laptops were a luxury in that time). The code was really awful, and that part

I remember in college, someone left his/hers C assignment source code in the lab (laptops were a luxury in that time). The code was really awful, and that part hurt my eyes: /* commented out code. <--- Yep. That was the actual comment. and here was the code seriously */ At least (s)he knew what a block comment was.