Physics, quantum physics, electronic music equipment, psychology, paranormal type s**t, philosophy, art, and maybe skateboarding, but can you even be a nerd about skateboarding if you drink fight milk?
Nerd out? Nothing I could think of in the way people use that term. I mean, I study a number of scientific fields, work on designing electronics, and lately started rebuilding old electronics and appliances.
@Dr. Sus Skateboarding used to be fun. The pain isn't worth it anymore. Attempting anything more than a 360 on a baby half pipe on my best day results in pain. I accept my limitations.
That's a bummer. I can still ride, and ironically it mostly helps my pain. It keeps the core muscles tight that help my back from acting up. I can still shred around big bowls, and that's good enough for me. I learned that skillset after a 16 year hiatus, and I was never a transition skater, but that's where old dudes go to die... the bowl.