The Royal Society of Chemistry had a competition to see who could come up with a solution to the dilemma at the end of the 'Italian Job'. A homonym solution was suggested as follows:
Twelve-year-old Thomas Nixon's homonym solution was for the gang to sing until they all got "frogs" in their throats. The frogs start to jump up and down which rocks the bus. They use the "rocks" to weigh down the end of the bus.
Eventually, the gang's throats become sore from the singing. And with the "saw" they cut the gold bullion in half. Because two halves make a whole - the gang could sneak the gold through the "hole".
See BBC for story: