In Spanish slang 'yeyo' is used to refer to a sudden sickness or fainting spell, often due to a drop in blood pressure or a stressful situation. It can also refer to an old person.
Examples
- Spanish: Después de subir la montaña, me dio un yeyo y tuve que sentarme.
- English: After climbing the mountain, I had a 'yeyo' and I had to sit down.