Rhyming on criss-cross, particularly with a word familiar to children and teachers, possibly with similarity to lap forming a bowl.
Compare also traditional children’s rhyming game / massage (rhyme said while touching, tickling, and blowing), which goes:
criss-cross applesauce (not comparable)
Generally used by nursery school and primary school teachers to children, sometimes followed by “spoons in the bowl” to mean “hands in your lap”, strengthening analogy with a bowl of applesauce; alternatively, “spoons in your bowl”, “spoons in your lap”.
Spelling varies, as it is primarily said, not written, but “criss-cross applesauce” and “criss cross applesauce” are most common.