In English, it is correct to say 'octopuses', first used by uneducated peasants who did not know of the word's Greek origin, however, it is still technically incorrect.
The word 'octopus' is Greek (octo=eight, pus=foot), therefor, it's ending should be a Greek ending. The Greek ending of the word 'octopus' is 'octopodes' (pronounced: Ock-Top-Oh-Dez).
That freako octopus fondled my jugs when he was pouring a beer in the hot tub.
He puts his hand on the back of her neck, she shrugs it off then seconds later he tries to put arm around her waist.
She feels harassed and tells him to f*ck right off