They gave each contestant a grid of letters and they had to find as many four letter words as they could. Trouble is they had to do it in 22 seconds and there was no timer so as well as finding the words, they had to keep count of 22 seconds and push a button to stop the clock.
It would seem that the programme planners assume that any one that matters is out on the town on Saturday evenings and therefore they only need to serve up rubbish !