My attachments did not attach. Here are the pictures. When I purchased this cactus they called it a Brain Cactus.
Mine has smaller needles. Also mine is so much smaller... Could it still be Cereus peruvianus f. monstrosa?
If not that variety, at least you now have a starting point. All I have to say is a catcus is what I do when I find t*rds where I want to weed or plant.