Bunkshelf

Ostensibly, a means of storage provided for the occupier of a bunk bed. A handy exclamation, a placeholder term for an item unworthy of interest, or (as the full bunkshelf) an expression of completeness.

Derek: I'll have a pint and a packet of scampie fries.
Barman: A pint of what?
Derek: Bunkshelf!

Binky: These lecture notes are a load of old bunkshelf.
Boo: Owned.

Instead of doing the full monty at his wife's birthday party, Butterworth decided to present the full bunkshelf.