Looks or lack of style, nerd [closed]
“We all try to have good looks but we can’t be cool. The only way for some of us to be cool is for some of us to look like nerds. If that’s you, be nerdy. Whether you are talking about science or fancy basketball statistics, own and be proud of your nerdiness.”
I don’t really think this is about self-deprecating yourself in speech; I think it’s about being “cool” by seeming like a nerd instead of having good looks.