kick up (one's) heels
To enjoy oneself without restraint. Now that that big acquisition is finally over, we can kick up our heels and celebrate!
kick up (one's) heels
Informal To cast off one's inhibitions and have a good time.
kick up one's heels, to
To enjoy oneself exuberantly; to frolic. This term, which calls to mind a prancing horse or a vigorous dancer, originally meant to be knocked down or killed. Thomas Dekker used it in this sense in his play, The Honest Whore (1604): “I would not for a duckat she had kickt up her heeles.” The modern sense dates from the late nineteenth or early twentieth century.