It's a common phrase used in a variety of contexts, such as:
* Describing someone's appearance or personality: "Il est grand comme toi" (He is tall like you)
* Comparing yourself to someone else: "Je fais la même chose comme toi" (I do the same thing like you)
* Expressing agreement or similarity: "J'aime le chocolat aussi, comme toi" (I like chocolate too, like you)
The exact meaning can vary depending on the context and the speaker's intention.