Writing in a banana with a biro

Writing on a banana is like doing something you know you shouldn't really be doing but you do it anyway.
It's like knocking down road cones that were neatly lined up.
It's like the need to touch something that says 'don't touch'.

It's the desire to rebel.
It's satisfying the urge.
It's writing on a banana.

Something you just have to do.

This brief we were given was pretty broad. We just had to describe what it was like to write on a banana.