The zombie check is for when you wake up after a hard nights drinking and aren't sure if you are alive or not,
This simple test involves getting a shotgun and having your left leg blown off. If you didn't mind that much and are alive in 6 hours you pass the test and you have conclusive proof you are a zombie.
The test can be used on siblings and friends if you suspect at all that they may indeed be the walking dead.
This test does not make you very popular with the test subject, but hey, at least you know for sure!
"I thought I was a zombie so performed the test, turns out I was!! So I spend 4 months in rehab and haven't eaten brains since!"
"thanks to the zombie check i havent been attacked by a real zombie for months, now i can be certain!"