mmmmm.

Though a bane to teachers of public speaking, people around the world fill pauses in their own languages as naturally as watermelons have seeds. In Britain they say uh but spell it er, just as they pronounce er in butter.
The French say something that sounds like euh, and Hebrew speakers say ehhh. Serbs and Croats say ovay, and the Turks say mmmmm. The Japanese say eto (eh-to) and ano (ah-no), the Spanish este, and Mandarin speakers neige (NEH-guh) and jiege (JEH-guh). In Dutch and German you can say uh, um, mmm. In Swedish it's eh, ah, aah, m, mm, hmm, ooh, a and oh; in Norwegian, e, eh, m and hm.