It's a filler for describing what
someone said. Like saying: blah, blah, blah or yada yada
yada.
usually used when trying to get to the point.
Friend: What happend with that girl you met at the
club?
Me:
the b*tch was like "I like your
chain (woopty woop woop)" so I was like (woopty woop bam boom)