Your teaspoons, that is! :-)

Honestly, *I* don't have any problems visualizing in metric units... (Though I might also think in hectare-meters for that dam; one of those is ten thousand cubic meters [=ten million liters] and, depending on the size of the acre, probably about six acre-feet.)

So, not everything in life is engineering... Although you're right, I actually *don't* get out all that much nowadays -- hadn't you heard, I've got a girlfriend? :-)