Sly boogie is the 'Creeper.' Any strong beverage or cannabis that continues to gain strength after consuming. Could also be a hot pepper that gets hotter after you eat it. Anything packing a change or surprise. Could also refer to freaky sex.
Man, that drink was some 'sly boogie!' That shit kicked my ass! Or, that girl didn't look like all that, but damn that was some sly boogie!
by Dave Deadeye January 8, 2015