It's putting in off-beat rhythmic accents.
Not just duh - DUH - duh - DUH - duh - DUH - duh - DUH like someone banging their head against the wall.
Lots of early jazz is packed to the brim with it.
(
The Mock TurtIe ™ --- Thinks you are a cunt, on, Sat 4 Jul 2009, 0:22,
archived)
no you don't
no one
likes jazz
people just pretend to like it because they're wankers
(
Gilgamesh gazed in wonder as Frampton came alive, Sat 4 Jul 2009, 0:26,
archived)