Persiflage

persiflage \ˈpər-si-ˌfläzh, ˈper-\ noun: frivolous bantering talk; light raillery

Etymology: French, from persifler to banter, from per- thoroughly + siffler to whistle, hiss, boo, ultimately from Latin sibilare to hiss, whistle (of imitative origin)

Compare persiflage to badinage.