Proper 13: Holding Him Tight

My twins are becoming independent as they begin to walk and gain strength. When they started to use a cup, I helped them drink so they wouldn't spill liquid, because they were not yet good at handling a cup. One day, my son tried to hold the cup and drink by himself. I cajoled him into letting me hold the cup so he could drink without spilling. However, he was so reluctant that I just let him go ahead and do it his way. I took my hand off the cup of juice, and he barely drank half the cup before dropping it, messing up his clothes and the floor.