Had one drink too many? Then stay put and wait it out until you're sober enough to drive yourself home. People are usually bad judges of their own sobriety. Some people who are clearly not drunk insist that they're wasted so that they can crash on your sofa, while others who are clearly buzzed insist that they're fully capable of driving themselves home--before they trip over your couch and knock themselves out.
The solution for all parties involved is the BACtrack Breathalyzer.
It's a portable breathalyzer that you can take with you so you won't have to rely on anyone else's guess on your sobriety. It connects to your iOS device so you can check out your reading on your phone or tablet. It'll also help you keep track of your drinking habits since it files away previous readings and saves them all for you to review later on. Ideally, when you're already sober.
Check It Out: $149.99