Something to do in Norwich on Saturday the 27th of March?

There are several sets of interesting traffic lights. These show Red, Amber and Green lights alternately. Very pretty.But as you're both young and presumably fit get a cab to the bottom of Gas Hill and run up and down it for a while. If you're still bored you could try for tickets for the Norwich versus Leeds football match. Alternatively find a man painting a fence and watch the paint dry.