There is no "tomorrow" or "tonight" in Zach's vocabulary. Instead, any indeterminate amount of time in the future is "tolater", as in "mom, can I go to bed tolater?" or "can I save my treat for tolater?".
I think he's started a revolution. I'm going to start using it when my other older children bug me about when something is going to happen or occur. For instance, when they ask when dinner is, I can say "tolater". There's no commitment to a certain time, or even day. It's just some time in the future.
Brilliant me thinks.
See you tolater!