Ha ha! No one can resist a giggle at this one.
The monstrose form of trichocereus bridgesii (Bolivian Torch Cactus) is known as the penis plant or penis cactus for good reason.
Great as a joke, always fun to grow. Very easy. Likes regular water for most full look...no floppy plants allowed.
Big, huge, large, giant plants in 5" pots. Ok stop laughing now....