What are these things that looks like ringworms on your tongue?

What you're describing could be a condition known as geographic tongue, which is characterized by irregular, smooth patches on the tongue that can resemble ringworm. These patches can change in shape and location over time and may sometimes cause discomfort. Other possibilities include oral thrush or other fungal infections, which can also appear as white or discolored patches. It's best to consult a healthcare professional for an accurate diagnosis and appropriate treatment.