Someone's Yer Bob

Substitute another person's uncle's name to come up with an alternative to "Bob's yer uncle" - eg. "Graham's Yer Bob" or "Mike's Yer Bob" or perhaps just "Someone's yer Bob"

Some New Beavish At Last

"Boy, this cat's really eating the biscuits" - Used to fill uncomfortable pauses
Basement talk - talk about the downstairs department, sometimes regarding going starkers
Hitting the studs - Doing some study
Penis music - blues music
Flossing the toad - crossing the road
Glue the Rat - Chew the fat