Lyric discussion by IllToast2That 

Cover art for Summertime lyrics by Big Mama Thornton

I can only guess that this would be similar to a negro spiritual where a poor black mother is holding her young child (in the middle of a very unfair and prejudicial world) letting him know that there shall be more than work (picking cotton?) in his life, for there are always the scant, but special, times during the summer where everyone relaxes, lets go, and truly lives.Until those moments of sporatic paradise, s/he is protected from harm by her loving mamma and daddy. Not sure, though, so don't crucify the attempt please...