She's got such a gob on her - she's always gossiping about someone or other.
He spat a big ball of gob on to the pavement.
One kid drummed on a washboard, another plunked a broom-handle bass, a third faked chords on guitar, another blew into a gob iron (which was what they called a harmonica), and they dubbed themselves a band.
I'm tired of listening to you, so gob-up!.