Blah

blah, n., onomatopoeia 1. the sound of generic human speech. 
Ex: Blah blah blah, yackety schmackety; also "walla walla," "watermelon cantaloupe."
2. (gamerese) an abbreviation for "Insert information that my character knows, but I don't, HERE." 
3. An abbreviation for "My character tells your character everything you just heard the GM tell me." 
Ex: So I met this guy named Lord Blah and he lives on "blah" street. or Did you guys all hear what the Storyteller said? Good, so "blah." [ME]