The big back phrase became popular online as a playful label for someone with a huge appetite, and wolf adds a hungry predator image that makes the joke easy to picture. Clips using this name circulate on meme soundboards and in short video edits, where the sound is treated less as a literal animal recording and more as a character cue for sneaking, hoarding or chasing food. Its staying power comes from that simple setup, which fits pets, cartoon edits and real snack runs without needing any context.