The phrase comes from everyday Russian drinking culture, where a short toast often opens a meal or gathering before anyone drinks. Here it is used in its simplest sense, a cheer for the fact that people have managed to meet at all, rather than for a birthday, wedding or other occasion. As a soundboard clip it circulates as a compact greeting for reunion videos, travel vlogs and friendship edits, where its warm, informal tone instantly sets a welcoming mood without needing a longer speech or explanation.