Armstrong & Miller sketch of the WWI RAF pilots

In this sketch the writer plays with language by using repetition throughout.
Speaker 1: "but the worst thing right, the worst thing is, do you know what the worst thing is"
Speaker 2:"Yeah whats the worst thing"  
Speaker 1:"The worst thing is I thought Chalky was my main homeboy"
This repetition is humorous as it builds up suspense to what the speaker is going to say.
The sketch is interesting because they are using non-standard lexis such as slang phrases like "oh my days,well vex and shit like that". These phrases may appeal to teenagers especially as they use slang more often then the older generation and they find it more humorous.

The characters use lexis that is commonly associated with teenage girls as the characters speak very quickly and in gossipy style.This is funny because neither of the characters are female. The writer uses phonology here,  as when the characters communicate they take it in turns to speak,  with little pauses between each short sentence usually with hyperbole in.The reason why the sketch is so funny,  is the fact that it's setting is very old and in those days people would speak in proper English with absolutely no slang, but in this case the setting is still the same apart from some of the language has slang thrown in.