The first thing to do is give it a sniff - if it smells off or funny, it's probably best to err on the side of caution and toss it. Think of it like a bad relationship - if it doesn't smell right, it's not worth the risk. And trust me, you don't want to be that person who eats bad sausage and ends up with a stomachache that lasts for days.
But what if it smells fine? Well, then it's time to take a closer look. Check the color and texture - if it's slimy or has a weird sheen to it, it's probably gone bad. And if you're still not sure, you can always try the touch test - if it feels off or sticky, it's time to say goodbye.