It's been my handle for quite some time, and it's easier to remember the one name than a billion on all the sites where I have to come up with a user name. I like onomatopoeia.
And, hey, eppendorf tubes make that noise, don't they? It's universally identifiable!
-nice handle btw- does it come with an arrow or a cross? you're getting a kind of test here ....(only for the brave and the shameless...)