I can do that loud whistle, too. My dad has season tickets for an NFL team for many years, so I went to a lot of games. I could whistle so loudly that the people in my section would flinch, and turn to glare at me. Fuck all of ya, it’s a football game!
I can write on a blackboard with both hands simultaneously, my left hand mirroring the right one.
And talking of blackboards, at some point I mastered drawing doted lines with chalk in a single stroke.
Like this: https://www.youtube.com/watch?v=l789l6np-qA
Edit: I can whistle painfully loud using my fingers, when I was a kid it was a rather common skill. Not so much now.
Watch that video with subtitles.
I can do that loud whistle, too. My dad has season tickets for an NFL team for many years, so I went to a lot of games. I could whistle so loudly that the people in my section would flinch, and turn to glare at me. Fuck all of ya, it’s a football game!
Brrrrrr d d d d d d lol