Its hard out here for a squirrel

There are no acorns on our trees this year. None. Someone told me that acorns are biennial, which would explain the problem but I'm not sure if that's true or not. If that's so you'd think the trees would talk it over and decide to how to stagger their vacations so we aren't left hanging.
This is annoying for me since I had planned to enjoy some acorn craftiness, both the grown-up kind and with my girls.

But I imagine the poor squirrel has that same sick feeling I get when I check my bank account balance.