Jif, the head honcho

Originally posted by Jon Skagfeld
Racking my feeble brain cells, I seem to recall that this might have derived from RAF ground crews who used this sign indicating that they needed assistance to bring a starter mechanism to fire up an aircraft, and at the same time saying :Two six on the trolley acc". (Trolley accumulator).

The expression "two-six" then do something, usually heave or lift together comes from the Royal Navy of Nelson's time.

Numbers two and six of the gun crew were the people who heaved in unison on the cannon ropes to run the gun out for firing or after a re-load.

R.