It is played totally straight.
The everyday life of ordinary middle class parents "outnumbered," and confused by their three young children. If this does not have you choking with laughter you must be dead.
All the best,
Oh by the way, the little girl in this series plays one of the two princesses in the oscar nominated film, The King's Speech. She is a real star.
Here are a couple of taster clips of the series.