EXAMPLES FROM THE WEB FOR LAGNIAPPE
At least, I saw her buy a quartie's worth o' coffee and a quartie's worth o' sugar, an' then ask for lagniappe o' salt.
Whyn't you ax fur des one lagniappe o' sugar-plums, baby, bein's it's Christmas?
Lagniappe is a small gratuity which New Orleans children always expect and usually get with a purchase.
We picked up one excellent word—a word worth traveling to New Orleans to get; a nice limber, expressive, handy word—'lagniappe.'