Waaaaaagh!

An Ork Boy? What, I ask you, what in the Nightbringer's name is this little beastie doing amongst Necrons?

Oh! Oh, well, he seems to have acquired himself a Gauss Flayer. What an enterprising young lad, I presume he's even figured out how to work it. But... wait... something's not quite right here...

Oh, I see. It seems that the poor Necron who originally held this weapon was... unwilling to part with it when he failed his "We'll be back" roll. Well, interesting, this; as we (for Imperium of Man values of we) are unaware of how the weapons actually fire, and given that Orkish fingers are far too beefy to fit into any Necron-designed trigger assembly anyway, only seems logical that the hands'd have to stay attached. Perhaps the enterprising... appropriator of wartime essentials has figured out how to fire it by yanking on the remaining forearm juuuuust right.

He seems so excited. Nobody mention that in the best case scenario, his fun new toy is going to pase right out of his hands right when the battle's getting fun.