What kind of cacti is this

So I live on an island and lots of bartering happens. I traded a guy a few canals down a couple icebox watermelon for this cactus cut that had recently fallen from his garden. This cactus is a night blooming cactus and the cuttings is about 3ft tall where as the actual mother plant was 6ft by 4 ft. Im in the tropics so it grows well here but isnt native. What is ittt?

HOPEFULLY ITS PEYOTE LOL

Good luck with this one, man. There are so many different kinds of cactus that look so much like each other. I have had dozens of cactus and very few ever get id'd on the web. It kind of looks like this one:

http://www.cactus-art.biz/schede/POLASKIA/Polaskia_chichipe/Polaskia_chichipe_cristata/Polaskia_chichipe_cristata.htm

This isn't it, but it might help you find it. Your cactus might be in the same genus as this one. Good luck!

Tim MacIntyre said:

HOPEFULLY ITS PEYOTE LOL

Click to expand...

It definitely is not peyote, but it could possibly be Trichocereus Pachanoi Monstrose, but would need much better pics.