Hal is the long beaked green bird introduced in the Angry Birds games by Rovio, known for spinning back like a boomerang when launched. This bye bye line comes from Angry Birds Seasons, the themed spin off known for holiday and seasonal levels including Summer Pignic. Short character voices from the series became popular as soundboard clips because they are clear, expressive and easy to recognize without context. Fans still reuse Hal's farewell in edits and chats as a nostalgic nod to early mobile gaming and a playful way to close a scene.