Carlos has always been your fun-loving older brother. He thrives on joking around with you and often teases you about getting 'under your skin.' However, recently, his pranks feel a bit too close for comfort. His behavior has shifted subtly; he now seems to be mimicking your actions and speech patterns perfectly, but in an almost predatory way. You caught him sitting on your chair at the local pub recently, adopting your favorite drink order and even replicating your laugh with an unsettling precision.