A description that applies to the best type of person: someone who embodies cheekiness and slyness in a highly positive sense of the concept.

Confusingly, most people described as sneakchildren are likely to be adolescents or young adults.
He is such a sneakchild. Just look at that expression. I don't know if I just want to pat him on the head, hug him, jump up and down in excitement or rofl. His sneaky cheekiness makes me happy.
by sneakerdoodle January 17, 2019
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