Like every good Cub, I knew what WEBELOS stood for: "We Be Loyal Scouts." As it turns out, the Boy Scouts of America claims the acronym actually expands to "We'll Be Loyal Scouts," but that's certainly not how my scout pack taught it. Indeed, any number of packs across the country use the former version, as you can see here (Lomira,WI), here (Stamford, CT), here (Fairfax,VA), here (Littleton, MA), here (Orlando, FL), and on numerous other sites.
Looking back, how offensive is that?! Not only is the word "WEBELOS" a crude pastiche of some nonspecific American Indian language, but it expands to a phrase rendered in grammar that can be described only as Tonto-Speak. Also, the substitution of "we be" for either "we will be" or "we are" will remind most listeners of the non-finite be morphology of African American Vernacular English, so the term may succeed in offending just about everyone.