¿Qué bolá?
What's up? — the Cuban greeting, stressed on the last syllable and spelled at least three ways.
Related lesson: Cuban Spanish: A Survival Guide.
Hear it in context
¿Qué bolá, asere? —Aquí, en la lucha.
'What's up, mate?' 'Here, getting by.'
¿Qué bolá con la guagua? Llevo una hora aquí.
What's going on with the bus? I've been here an hour.
Me escribió un «¿qué bolá?» y no le contesté.
He sent me a «what's up?» and I didn't reply.
What It Actually Means
¿Qué bolá? is “what’s up?” in Cuban: an opening, not a question anyone expects to be answered in detail. The stress falls on the last syllable — bo-LÁ, not BO-la — which is what makes it sound so unlike the standard noun bola that it apparently comes from. You will see it written ¿qué bolá?, ¿qué volá? and ¿qué bola?; none of the three is more official than the others, and Cubans argue about it online with enthusiasm.
Where It Comes From
The usual account starts from bola in its old sense of a rumour or a piece of news — ¿qué bola hay?, “what’s the word?” — worn down to a formula and re-stressed on the final syllable, which is where the -á spelling comes from. Others read the final stress as evidence of something else entirely and prefer the volá spelling. There is no documentary trail either way, so the entry stops here rather than inventing one. Cuba has several siblings for it: ¿qué vuelta? and the fuller ¿qué bolá con eso?.
How Natives Use It
As an opener between friends, almost always with a vocative attached — ¿qué bolá, asere?, ¿qué bolá, socio? — and as the default first line of a text message. The expected reply is a state-of-play, not a report: aquí, en la lucha, aquí, resolviendo, todo bien. If someone answers with actual news, the greeting has done more work than it intended.
Common Pitfall
Register: it is street-level and young-leaning, so it belongs with asere and not with your landlady’s mother. Stress it correctly or it dies — ¿qué BOla? sounds like you are asking about a ball. And know your border: Colombia and Venezuela greet with ¿qué más?, Mexico with ¿qué onda?, Argentina with ¿qué hacés? — the Cuban one travels only as far as the Cubans do.