Armstrong and Miller

This sketch shows two RAF pilots speaking in received pronunciation but the phonology of the speech is stereotypical British teenagers slang which is very contradictory to the accent in which they are using. This creates humour in the piece and the writer of the text assumes that the audience is British and/or understands the sarcastic use of the teenage slang. 

The language includes slang such as 'two-faced' and 'vexed' which the older generations most probably didn't use and, along with the old time setting of the speech, the pragmatics of the piece could be to show how language has changed through generations. Slang words are used very often in the speech, exaggerating the conflicting accent and therefore causing a comical piece. 

The lexis of the text it uses a lot of fillers such as 'like' and 'right' which are very common amongst natural speech of teenagers nowadays and also highlights the fact that this piece is meant to be informal, the exaggerated use of them causes humour and once again shows in a comical way how different typical British teenagers speak.