atún
/aˈtun/ · B2 · noun · m
tuna
🐟 atún sounds like a-TOON: a tuna so dim it swims into any can
Spanish atún means tuna, and by extension a dull, slow-witted person. Link the insult to the fish: a tuna is easy to catch, so someone who is easily fooled gets called atún. Say a-TOON, stress on the last syllable.