When I first started flying the "bumps" bothered me a bit. My instructor then explained the micro meteorology to me. All the little darker spots on the surface below heating up and then breaking loose and rising etcetera, etcetera. Didn't help much. Then he told me to just relax. Then he asked if I could just imagine those bubbles of hot air coming off the surface as being the same as fart bubbles rising in a bath tub. People wonder why I still smile when it gets a little bumpy.