What's the name of this Puerto Rican fruit?!

When in puerto rico two years ago, kids were selling these ovular fruits in baggies in this neighborhood!. about 20 fit inside a ziplock sandwich baggie!. they were green on the outside and you sliced them open with your teeth and the inside was gummy and fruity and you sucked on it and there was a pit that you spit out at the end!.

They were so delicious and sweet! they were a little larger than a very large grape! Anyone know the name of them!?!?!?Www@FoodAQ@Com

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