La diagonal

superkul ju, var riktigt nervös på några ställen

Jammin' can be a variety of things. I can think of two main examples: Listening to music and jamming to it: bobbing your head to the beat, headbanging, dancing, etc. Similarly, when crack climbing, the art of hand jamming creates a rhythmic connection with the rock, allowing for a seamless ascent. It's like finding the perfect groove on a climbing route, where the nice flow of jamming all the way enhances the overall climbing experience.

soft if you can jam