Flocking rhymes with:
blocking, clocking, locking, unlocking, blocking, clocking, cocking, docking, hocking, knocking, locking, mocking, restocking, rocking, shocking, socking, stocking, undocking, unlocking
Flocking sounds like:
falcons, feliciano's, felkins, filkins, flagging, flaking, flashguns, flashing, fleecing, flexing, flicking, flogging, flushing, foolishness, fulgencio