Apparently, a high school in Atlanta recently caught a bunch of kids pouring a bunch of vanilla extract in their Starbucks coffee. McKormick Vanilla Extract is 35% alcohol, which makes it 70 proof.
In fact, some other extracts (like peppermint) are 80-90% alcohol.
If you bake at all, more than likely you have some of this stashed in your cabinets. Just something to look out for if you're a parent.