Just a quick safety note:
There was an instance a few weeks back where someone was top rope climbing and the belayer forgot to double back their harness. During the lowering of the climber the belayer's harness came completely undone at the waist. only point of connection were the leg loops.
Please remember to double back after a pee or poo. The climber and belayer should always check that the other is tied in properly, double backed (actually look to verify), locked up, and that rope and belay device are properly setup.
Oh yes... and shoes tied... always tie your shoes!