Bom dia alcateia is Portuguese for good morning, pack, a phrase that works online because it treats a friend group like a wolf pack. It circulates mainly as a short WhatsApp audio and soundboard greeting, shared at the start of the day between friends who enjoy the joke of belonging to the same crew. Because it is brief and instantly recognisable in Portuguese-speaking chats, it keeps being reused for morning messages, group introductions and lighthearted edits where a shared identity matters more than a formal hello.