We lived upon nettles

We held out for six weeks, thought each day was the last
We tarried and shifted 'til now we're quite fast
We lived upon nettles when nettles were good
Waterloo Porridge was best of our food

The nettles are good at the moment in wasteland and allotment. I have no idea what '"waterloo porridge" was like. Probably horrid.

I is still raining here