A casual dance engagement accompanied by live music
The Niagara Falls Fling is the name of the dance in the season 1 episode School Dance. Amanda Lopez was chairperson of its decoration, snack, and entertainment committees. Amanda is so worried that Milo will ruin it, she assigns Lydia to have fun for her so she can marshal the event. After Vinnie Dakota and Balthazar Cavendish show up to gather information on Milo (with wooden stakes that were for their latest pistachio mission), Chad comes to the conclusion that they are vampire hunters after Mr. Drako.
The image gallery for Niagra Falls Fling may be viewed here.