InPlz

"Plz" is an informal abbreviation of the word "please." It is commonly used in casual online communication such as text messages, social media posts, and online forums to convey a more relaxed or informal tone while still requesting something politely.

The phrase "in, plz" likely means "in, please." This could be a request for someone to join or participate in something, such as a group activity, event, conversation, or online game. The addition of "plz" indicates a casual or informal tone while still politely requesting the person's involvement.