Gum is an erotic symbol, so dreaming of it signals repressed desires that need to be satisfied. Stepping on someone else's gum evidences your dependence on that person; and if someone else steps on yours, you will not likely receive help from others because you continually bother them with your demands.
Gallery of dreams
Reading in dream
Sometimes you will not be able to differentiate lucid dream. If you want to be sure, try reading a simple sentence, if you are able to read then you are in wakeful stage if not you are in lucid dreaming. Studies show that you cannot read while dreaming or you will not find the repeated sentences one more time.
In most kids, lack of sleep can surely result to ADHD (Attention Deficit Hyperactivity Disorder), which is the opposite with the adults. Children between 7 and 10 who gets less than 8-hours of sleep every night will likely to become inattentive, impulsive and hyperactive. Their sleeping patterns can easily affect their brain.