Kazzan 说:
Please keep yourself from using bad grammar, it makes you look like an idiot. (the orks talk is ok tho)
Since nobody else got it... it's a reference to the silliness of the voice acting in Dawn of War. Captain Davian Thule has trouble pronouncing. "Spess Mahreenz" is the generally accepted spelling to represent his pronunciation. The "metal box" statement is also a good chuckle.
It's ****ing Kasrkin, by the way. Not Karrkin, not Karskin.
Here, if you need proof.
Also, why is the armor hilariously small (and sexually suggestive)?