Here in Bucks its a verb - Biffa means having a thoroughly good clear out. Used and understood throughout the
village. Don't forget that it is a capital 'B' as it originates from the re-cycling company Biffa but applies to any skip, general tidy up or clear out including
packing stuff up to take to the dump or charity
shop. Can Biffa out things like the car or your pockets. 'Biffared out' is also quite acceptable.
Verb as in - Going to have good biffa out this
weekend.
Nice day to Biffa out the
shed.
Now we've had a Biffa out we can get into the
loft.