A person who is unbelievably kind and sweet, and in addition is the most adorable and cutest person in every room. People have an immeasurable amount of love for this individual and everyone knows they give the best hugs known to man.
Ashley is my sweetums patootie, every time I see her I want to squeeze her and tell her how much I love her.
An extreme amount of sweet.
Sweet beyond recognition.
Also can be used when no other word can describe the amount of goodness of the tense you're talking about.
Skeetums is derived from the term, "skeet skeet". Skeetums is a versatile word which often used to express the joy or anticipation of getting poon tang, or celebrating after the fact.