1. A barrier (usually temporary) that exists for no reason. 2. A barrier erected for political reasons. 3. A procedural barrier to accomplishing a worthy task.
1. "Dude, Cruz and his Teabaggers
teabarricaded the park."
2. "Dude, there's a teabarricade around the Urban League voter registration booth."
3. "Dude, the GOP put up a teabarrier around the whole fucking government."
Seen mostly when pseudoscientific people such as Flat Earthers and Young Earth Creationists want to overwhelm the unknowing with a wall of words, this rambling verbosity is meant to disguise a lack of actual knowledge in the subject being addressed.
Dude, he went on for ten fucking paragraphs, and it was all just wrongness with blustersauce poured over it.