The glider and mask Howard was using are similar to the Green Goblin's costume from "Spider-Man."
"Viva Les Cake Frites" is supposed to mean "Long Live Cake Fries!" and to echo a number of historic French slogans such as « Vive la France ! » ("Long live France!") or « Vive le Roi ! » ("Long live the king!"); however, the word "Viva" is Spanish, not French (though the two words are pronounced very similarly), and is a singular verb where a plural would be needed. The proper French would be something more like « Vivent les gâteaux-frits ! »