Persiflage

Teasing, mocking, or flippant banter.

Found in Cham­bers The­saurus as relat­ed to glib­ness while look­ing for words to describe P J O’Rourke’s writ­ing tone. Flib­ber­ti­gib­bet has led to a cas­cade of dis­cov­er­ies in the dic­tio­nary today.

Also per­si­fleur, one who engages in persiflage.