A self-centered person
Roy: Man, I can't believe how much Belle could talk, she just got things to say on any possible subjects!
Jay: Yeah, she's a blah me.
Jay: No matter what topics and how much she says, you can summarize all into two words, 'blah' and 'me'. Blah blah blah me me blah blah... She just needs your attention mate.
Roy: You're freaking right!