Cone of silence

When out with friends, we often refer to being in a "cone of silence". The implication is that you seem to have found a noisy spot at the table which means you cannot hear a word of the conversation going on around you.

Turns out that the term originates from the Get Smart TV series, here are some pictures.

PS: Made my first contribution to Wikipedia today, adding a link to images from the Cone of Silence entry.