On March 2, Reddit user “gandhiissquidward” posted a video to Reddit of biology teacher Kyle Jones’ lecture on antibiotic resistance. On his YouTube channel, Jones uploads lectures about biology topics like DNA replication, photosynthesis and population genetics for his students to watch. But the lecture that was posted on Reddit was different — for the first fifteen seconds, Jones was playing Blizzard Entertainment’s first-person shooter video game “Overwatch,” before the webcam was rolling for his lecture. The video gathered over 100,000 views in just 3 days, with over 300 subreddits submitted on the /r/videos post. Watch the video below to see his reaction to some of the comments from the post.