Dead air 

1. An uncomfortable period of awkward silence that usually occurs in a tense social setting;

2. A period of time during which a television show is broadcast without an audio portion.

Man 1: How was the blind date?

Man 2: OK, but we ran out of things to say while we were at the bar. When we sat down for dinner, neither one of us could think of a thing to say. It was 100% dead air for about five minutes.

Man 1: So you didn't get laid?

Man 2: Asshat.

Dead air by BcozTheNite March 27, 2008

dead air 

a sudden and undesirable silence (from the term for the interruption of radio or television broadcasts)

The dead air coming from the bathroom was sign that something dire had happened.

dead air by The Return of Light Joker October 8, 2011

dead air pressure 

Level of dead air.

(Dead air)
Someone: "Oh God the dead air pressure is high!"

dead air pressure by ivancuber April 22, 2017

Airship race (dead heat in the) 

Used to describe a lady well endowed in the breast department walking past.

"I say, her comes Daphne from accounts"
"Yes, and I see it's still a dead heat in the Airship race"

Airship race (dead heat in the)

Airship race (dead heat in the) by Tony Yates May 9, 2007