I'd add one caveat. "you came here to learn about <topic>, not me. Feel free to Google me if you want. Just please keep in mind that all teenagers make mistake

I'd add one caveat. "you came here to learn about <topic>, not me. Feel free to Google me if you want. Just please keep in mind that all teenagers make mistakes. It's not my fault you only made boring mistakes." To make it work, you need to deliver the last line while seemingly preoccupied with something presentation-related. Otherwise, it seems hostile. An example could be as simple as pretending to change settings on microphone or moving one slide back, then forward twice. It conveys it was intended to be inner monologue