Mercadona is one of Spain's largest supermarket chains, so references to its stores, products and shopping routines are widely understood by Spanish-speaking audiences online. Short clips using the Mercadona name circulate as memes and reaction sounds, especially in videos about grocery shopping, household routines and everyday life in Spain. Their appeal is recognition rather than novelty: viewers immediately place the setting, which makes the joke land faster. That shared familiarity keeps the sound useful for creators making relatable, local humour.