rumble grumble

so at work i like to say "rumble" or "grumble" in a low voice for really no reason at all. sometimes i'm expressing exasperation, or frustration. sometimes i'm just filling the silence. well.. as we were researching the next workshop we discovered someone who works on the issues we've identified who has the last name of "rumble".. so now whenever we talk about whether he need to come to a particular meeting i say "rumble" to say that he should be invited.