Enjoying a weekend trip to a lake, but it's too cold to swim. I have to enjoy the water anyway, so I'm wading in a lake wearing my black wellies and enjoying digging my rubber boots into the sand and mud. The mud is very squishy, moving around my rubber boots. I go into deeper and deeper water, wondering if my wellies leak. Luckily, they don't, so I keep walking around in the clear water, enjoying all the feelings of the mud and sand under my feet.