Oisuga 

The slash ship between Oikawa Tooru and Sugawara Koushi

Person 1: I ship Iwaoi
Person 2: I ship Daisuga
Person 3: Obviously Oisuga is the best

Oisuga by Haikyuu Stan September 2, 2020

pork osaurous 

Obese person of riduculous girth. Not gender specific.

Also giant pork osaurous - for the really big ones.

There was a herd of giant pork osaurous grazing at the all you can eat buffet.

pork osaurous by wheaty June 2, 2005

Tyrant-osaurus Trump 

A species of animal once thought to be intelligent but now known for its loud obnoxious behaviour, massive ego, tyrannical tendencies and its very small hands.

Watch out! That country is controlled by Tyrant-osaurus Trump. Don't say anything bad about him or he may go to war with you.

Tyrant-osaurus Trump by Donald Trump Super D February 21, 2017

Oisann 

''Oisann'' Is the norwegian term for ''oops''. Often used is mall shops when you bump into someone.

Person 1: *bumps into someone'',
Person 2: Oisann.

Oisann by shreggert October 6, 2020

dyke-osaur

A woman whose lesbian sexual drive is above average, an extremely dyke-y lesbian

Omg, that girl Emily is such a dyke-osaur, she just hooked up with three chicks!

dyke-osaur by Chi-Ty December 21, 2010

Osauna Bin-Laden

That one dude who's casually relaxing in the sauna...naked. This makes everyone's sauna experience uncomfortable and quiet

1. Man lets hit up the sauna!
2. Nope, its Friday, thats when the Osauna Bin-Laden usually strikes

Osauna Bin-Laden by ThomasTurryman March 22, 2011

-osaurus 

A suffix that can be added to an adjective to make a word that refers to a person that is being that adjective.

Some good -osauruses

Oblivosaurus (Someone that is oblivious)
Grumposaurus (Someone that is grumpy)
Exaustosaurus (Someone that is exausted)
Smarmosaurus (Someone that is smarmy)
Bipolosaurus (Someone that is bipolar)

etc...

-osaurus by PohTayToez August 24, 2007