One of the most common Photoshop fails is when the proportions of an image are completely off. This can happen when someone tries to manipulate the size or shape of an object and ends up making it look distorted and unrealistic. You'll often see this on advertisements or magazine covers, where models are made to look impossibly tall and thin or their body parts are stretched out of proportion.

Another common mistake is when someone tries to remove an object from a photo but doesn't take the time to properly blend the edges. This can result in a very obvious and awkward-looking "cut-out" effect, where the object looks like it's just been pasted onto the background. This is a dead giveaway that the photo has been tampered with and can really ruin the illusion of a seamless image.

Sometimes, people will try to add elements to a photo that simply don't belong. For example, you might see a beach scene with a giant dinosaur in the background or a group photo with a UFO hovering above. While this can be done well with careful planning and execution, it often looks completely ridiculous and takes away from the authenticity of the image.

Finally, one of the most cringe-worthy Photoshop fails is when someone tries to airbrush a person's face to make them look flawless, but ends up making them look like an entirely different person. This is a problem that plagues many magazine covers and advertisements, where models and celebrities are made to look like they have perfect skin and no imperfections whatsoever. However, this can backfire spectacularly, resulting in a completely unrecognizable and often unsettling image.