How'd I end up with battle shout?

[wobbly]

In the middle of combat I ended up with the battle shout effect. I lack the talent & can't see it as an effect on any of my equipment. Anyone seen this before? An unlisted effect on an item?

[stinkstink]

You were bump-attacking while disarmed, and your gloves proc Battle Shout on hit (which you can only see if you're a brawler or pick up Flexible Combat (which is broken for weapon users in this version) )

[wobbly]

so heroic gauntlets proc battle shout?