To be "danbusted" means to be arrested for doing
something that is not against any law, but which the
cop thinks is unlawful or just makes stuff up as he goes along. Originated in the gun rights movement when Dan Moore, whose internet forum moniker is "Danbus", was repeatedly arrested for lawfully carrying a visible sidearm in Norfolk, Virginia in the
mid-2000's and was proven in the rights. His story was posted on the nationwide gun rights site opencarry.org, and gave rise to the verb "to danbust" among
gun owners.
Dude, I got danbusted when the
cop stopped me for not wearing a bike helmet,
even though there's no law says I gotta have one.