No le expliques tan complicado, es un poco corto de luces y se confunde fácilmente.
Don't explain it so complicated; he's a bit slow-witted and gets confused easily.
Cuando era niño, mi hermano era corto de luces y no entendía los chistes sencillos.
When he was a child, my brother was slow-witted and didn't understand simple jokes.
Si sigues actuando tan corto de luces, no vas a conseguir el apoyo del equipo.
If you keep acting so slow-witted, you won't get the team's support.
No es que sea malo, pero en ocasiones parece corto de luces cuando toma decisiones rápidas.
It's not that he's bad, but sometimes he seems slow-witted when making quick decisions.
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