How to fluently speak a foreign language. I'm A2 with French but I could live with Spanish or German as well.

Kung Fu

Skateboarding. Looks so fun

I did Brazilian Jiu Jitsu for a while untill after the 3rd injury I realised this isn't going to be good on the long run and I stopped doing it. However, it was long enough to see what a magical power that is so I'd say that being able to posses the skills of a black belt without going thru the training would be quite nice.

People don't realise how helpless you'll feel trying to wrestle with someone who knows what they're doing. Being bigger and stronger will not save you unless you get really lucky.

Math, specifically gambling.

"I know how to understand and speak every language with the proper accent. Wöáh."

The ability to sew anything. I love to binge sewing vids so being able to take some scraps and make cool shit would be amazing.

Having a strong speech skill. I'll have the silver tongue needed to talk and utilize etiquette to get what I need and want. Maybe even pick up someone too.

Sex probably

Deduction, at superhuman speed of course just like neos kung fu speed.
Deduce the optimal stock market traction to gain a big chunk of capital so I can than deduce the best proper services to provide, or find the proper projects

Psychology.

I assume psychology is very useful for social interaction, but complicated and mid-impact enough that I personally wouldn't bother to analog-learn it.

maths.

I never had enough brains to not suck at maths.

My first thought was also languages, but all the classes for a bachelors in nuclear engineering would be nice. Huge passion of mine and I can't really pursue a degree at this point in my life

Knowing every tree, plant, insect, ...

How to speak Japanese. I'd move there in a heartbeat.

Mind control.

Tell me it doesn't use alien DNA like In Prey (2017)