Green’s Dictionary of Slang

rhythm and blues n.

shoes.

1983		J. Sullivan ‘Wanted’ Only Fools and Horses [TV script] Come on I’ll buy a new pair of rhythm an’ blues as well!
1996		P. Howard The Joy (2015) [ebook] [T]his flood of baby sick [...] splatters across the floor, all over the screw’s rhythm and blues and up his trouser legs.
2002		K. Lucas ‘All my life I’ve wanted to be a Barrow Boy’ in Obfuscation News Apr. Issue 20 🌐 These words sent a cold shiver down his spine to his Rhythm and Blues. You don’t get much for a Deep-Sea Diver these days.
2005		P. Howard Curious Incident of the Dog in the Nightdress 70: I’m buying [...] new rhythms – we’re talking Hugo loafers.