A term describing something totally lacking in flavour, style, identity, political platform, humour or any distinguishing characteristics to engender an emotional response (positive or negative). It may be considered something so bland that it's actually a a weaponised form of boredom.
I just don't like white bread, it's blandthrax.
American Idol is just musical blandthrax, dude.
Japanese cars from the 1980s were mostly blandthrax - all grey plastic and boxy.
Oh man, spent 2 hours today filling in my passport application form, feels like a blandthrax attack!