On its face I'm not against using analogies to explain scale, but its not like i really have an intuitive grasp on the size of a 747 or a football field's volum

On its face I'm not against using analogies to explain scale, but its not like i really have an intuitive grasp on the size of a 747 or a football field's volume. It also helps to remember that 1m^3 is 1000L which allows you to transform this into much easier (at least to me) analogies.