IMR in texting usually means I Mean, Really, and it’s used to emphasize a point or express disbelief, frustration, or sarcasm in a conversation. For example, someone might say, “IMR, that was the best excuse you had?” to highlight how unconvincing something sounds. Depending on context, IMR can also stand for phrases like I Might Remember or In My Room, but these meanings are less common. In most casual chats, I Mean, Really is the intended interpretation.