Honkin' Moose

Nathan and Laura were discussing the Backyardigans cartoon series, which is one of Laura's favorites (Nathan's, too - next to the John Deere series). So, they get on the issue of each of the characters' species and Laura informs Nathan that "Tasha" is a hippo and "Tyrone" is a moose. Nathan wanted to know what the difference was, so Laura informs him that a moose has "horns"(antlers). Nathan attempted to refute her claim, stating "No, he doesn't have horns! Tyrone has four ears!" Laura explained that he only has two ears and that the bigger objects on the side of his head were called "horns"(antlers, actually, but I'm not one to harp on such things ;-). So, Nathan thinks about it for about 1.3 seconds and says, "how does he make them honk?"