This clip is identified with Tom and Jerry, the animated cat-and-mouse series created by William Hanna and Joseph Barbera, whose theatrical shorts debuted in 1940. Exaggerated swallowing noises became a familiar cartoon convention for showing fear or unease without spoken dialogue. Short gulp effects later spread through reaction videos, meme compilations, and social media edits because they communicate nervousness almost instantly. The sound remains useful whenever a creator wants to evoke classic slapstick timing in a compact, easily recognized form.