Your kick devastates a <mob>!
You have become better at kick (86%)!
You feel a sudden rush of insight into Brawling!
A <mob> is writhing in agony.

*** A short bit later at the class trainer...


skill brawling
You know no such skill.

p brawling
You can't practice 'brawling'.

Without knowing what level you are, different classes get brawling at different levels.

So you may have unlocked access to the skill, but it could be above your level. And when you try to `sk <skill>` above your level, the return is `You know no such skill.`

-Ish