Okay, I should have taken a picture of the fruit before we cracked it on the table (and the other one we cracked on my head... they really do that, I guess) and of the inside, which looks like either aliens or eyeballs, I´m not sure. But I´ll try to get a picture of those.
The outside looks like an orange, with a long green stem, and it´s hard like a really thick egg shell. You crack it to open it, then you eat the inside with a spoon. There is a thick spongy white layer like the pith (yes, pith) inside an orange, but 10 times thicker and spongier, and it doesn´t stick to the fruit like it does with an orange. PS the oranges here are green and yellow and brown... the people here are leery of ¨orange¨ oranges because they look fake/dyed, Mauricio told me.
This fruit tastes slimy, yet the seeds inside the slime pockets have a similar crunch to pomegranate seeds. If you crunch the seeds, there´s kind of a bitter after-taste, and some people chew it and some people just swallow it. I tried both. Google ¨granadilla in Colombia¨ and look at some pictures before I get some up!
Video: Here