Users on X replied to a post outlining three professor types on AI tools. One noted only the permissive and pro-AI types appear in engineering majors. Another described a teacher who generates course materials with AI yet maintains a strict anti-AI student policy. Multiple replies quoted the third type encouraging AI use while joking about environmental harm. Specific accounts mentioned a business lecturer promoting AI and selling AI-generated music, a biology professor frustrating students with enthusiasm for the tools, and a fourth professor who expressed no preference either way.