The show is one of those horrible sketch shows that I tend to call catchphrase comedy in which the same sketches are repeated over and over and over again each week with the situation changed (supermarket one week, swimming pool the next) but the punchline being the same, based on each characters' catchphrase.
It's popular in the UK amongst the student demographic. By the third series it was clear the the two "comedians" responsible for it had run out of ideas and were just scribbling any old crap down. Absolute nonsense.
Other catchphrase comedies to avoid: The Catherine Tate Show, The Karen Dunbar Show, The Fast Show, Harry Enfield, Chewin' The Fat.
Best British sketch shows of recent years: Man Bites Woman and Big Train.