I don't know that this is a Riff-Raff topic, but I couldn't think where else to put it.
Looks like it goes in General.
I've always been interested in what phrase (or sound effect) people use when they're trying to shorten a speech. I've always used "blah-blah" as in, "So my mom was telling me to clean my room, blah-blah, and I asked her why she's always nagging me." Other people seem to use mostly "yada yada" as in "I was on the IRC talking to RandomMan about video games, yada yada, and next thing you know we're back on the subject of dicks!" or "dah dah" as in "Brucker was droning on about some pointless crap, dah dah dah dah dah, and I just downvoted him on general principles."
So, in short, I'm curious as to what you say as generic sentence filler.