This is a silly break. All dancers pretend that they are itchy from flea bites and scratch furiously. Dancers can also "scratch" other dancers. Again, this is intended to be silly. Play it up.
Words that rhyme with Fleas: these, disease, trees, please, degrees, ease, knees, cheese, seas, breeze, seize, bees, squeeze, peas, skis, threes, displease …