There is not even a synonym that doesn’t date back to the 1920s. If he wants to reach the politically active geriatrics, I’d think ‘Biden’s Bunkum Bus‘ would be the bee’s knees.
|malarky – empty rhetoric or insincere or exaggerated talk; “that’s a lot of wind”; “don’t give me any of that jazz”idle words, jazz, malarkey, nothingness, windtalk, talking – an exchange of ideas via conversation; “let’s have more work and less talk around here”|
(Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.)
noun Slang. Something that does not have or make sense: balderdash, blather, bunkum, claptrap, drivel, garbage, idiocy, nonsense, piffle, poppycock, rigmarole, rubbish, tomfoolery, trash, twaddle.
Slang: applesauce, baloney, bilge, bull, bunk, crap, hooey.
(The American Heritage® Roget’s Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.)