Drawing with my right foot

This is party trick I draw with both my feet in the same style as my right hand drawing . This drawing is done on A1 size paper.
Why do I do this type of drawing ? I normal do it if I am just passing time, which I will doing on 7th August in Winchester, High Street,UK as long as it does not rain.
I normal do a lamp shade first. as a warm up drawing the dog is another drawing I just started to do with my feet I t hink it has gone well. My Touble is with the lighting for the A1 paper. The photo also show the folds on the paper which is a bit of pain.