hip to (someone or something)
Aware of someone or something. Why isn't anyone else hip to Sarah's schemes? She's so obvious! You better get hip to Mark's manipulative ways now, before it's too late.
*hip to someone or something
Inf. knowing about someone or something; adapting to someone or something. (*Typically: be ~; get ~; become ~.) The boss began to get hip to Mary and her deviousness. She finally began to get hip to what was going on.