1.5 fairly large people. You're talking to Americans, remember.

For non-metric users, three gallons of milk is probably more accessible. 400 kg is 880lb, which is roughly 12x as dense as water, which is the wild part (or it feels like it, that could be a totally normal density for stone, I’ve already put too much effort in for napkin math on a shitpost)

In your example of why the American system is bad resort to using the American system because nobody had any context?

Check mate atheists.

Well. A corgi-sized bucket, anyway. Not one of the bigger ones, great dane or so.

Couple of buckets if it's corgi size.