When you get walker blood in a cut in The Walking Dead comics, you become infected and turn into a walker.

In The Walking Dead comics, if a person gets walker blood in a cut, they become infected and eventually turn into a walker themselves. This is because the walker virus is present in the blood of the undead, and any contact with it can lead to infection. The virus spreads rapidly throughout the body, causing the person to experience symptoms such as fever, weakness, and eventually death. Once deceased, the person reanimates as a walker, joining the ranks of the undead. It is crucial for characters in the comics to avoid any contact with walker blood to prevent infection and maintain their humanity.