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1.
To move in an indecisive fashion. To browse.
I saw her flik-flaking around John lewis the other day.

I thought I'd pop up west, have a flik-flak about.
by Cynthia Purple-Pencil March 04, 2004
 
2.
Used by the Dutch to mean a back flip.
Ohh did you see my flik flak!?
That flik flak was SUPERPHAT!
by Orlandoooo January 20, 2008