Are they playing or are they holding a swear contest?! :D I don't know weather this phenomenon is reserved for console CoD or not but I'm pretty sure that the Halo teams in MLG had a way more professional approach during their showings.
On a side-note Brits never were very well mannered when it came to eSports. Remember 2GD trash-talking forever during WSVG UK? Same with London Mint and Birmingham Salvo in CGS CS:S and CS:S in general.
Dont forget that that is console fags. Back when Cod4 promod was big on PC, it was pretty serious. But now cod is just shit and console is fucking awfull. FPS on console is so wrong, I simply dont understand..