Octoplus 

An octoplus is a rare species of sea animal with more than eight tentacles

I couldn't believe my eyes when I saw an octoplus for the first time

Octoplus by Guyde November 18, 2016

Octopus cream 

When a guy comes in a woman's hair

Bro last night I gave my girl octopus cream!

Octopus cream by Quickndirty April 20, 2023

crusty octopus 

When someone doesn't wipe their butthole after taking a shit and has someone else use their tongue to lick it clean afterward. This is usually done as payment for cocaine or other drugs as was seen in the 1970s by Eddie Nash, cocaine and nightclub kingpin of LA.

Eddie: Oh Jesus, I just had explosive diarrhea and it's all over my butthole.
Crackhead: Oh boy! I'll give you a Crusty Octopus for a gram of cocaine.

crusty octopus by Black Dynamite 442 December 31, 2017

Blue Octopus Space Station 

A game on Roblox made by GamingBert52. About a reactor core on a space station.

1: I played Blue Octopus Space Station today
2: Cool!

Blue Octopus Space Station by Aidxn_Dev June 19, 2021

feeding the octopus 

Complimenting someone or gassing them up to the point where you're feeding their excessive ego, like a greedy, hungry octopus. 'Octopus' is also phonetically similar to solipsism, the idea that only the self exists.

Lou: You look so amazing today Julia.
Julia: (already full of herself) Omg thanks.

Briana: Lou, you're just feeding the octopus.

feeding the octopus by bri_bel April 24, 2017

Octopusseios 

Pronounced: octo-puss-hwä'

A term popularized by an episode of Comedy Central's "Drawn Together" where Princess Clara reveals her monsterous eight tentacled genetalia due to a curse inflicted by an evil step-mother.

Also used to reference a particularly unsightly or disfigured vagina that induces uncontrolled vomiting.

Example:

Girl: Scott and I were getting hot and heavy last night but he was turned off by my octopusseios.

Octopusseios by Figaro The Cat March 24, 2006

Octopus Defense

When a girl's body spontaneously begins menstruating in a desperate attempt not to have sex with you.

Kate's octopus defense kicked in when we were hooking up at that party. She inked all over the place, left me seeing red.

Octopus Defense by Taberlin November 7, 2017