O-Rama 

It's a nonsensical/meaningless word/term, which probably implies something that's newest or improved, or even amazing.

OR, It was a way to modernize a product or a business name

A plain old bowling alley became Bowl-O-Rama

Some video games called "Zombie Bowl-O-Rama" and "Cars Race-O-Rama"

O-Rama by Herraldier H. Donoldiez October 12, 2016

Holy Crap O Rama 

An expression of extreme surprise or shock. A cavalcade of excitement..

Holy Crap O Rama, that twister is headed right in our direction.

Holy Crap O Rama by MDiver July 4, 2012

slam-o-rama 

Noun: a group sexual encounter; an orgy.

After the city shut down the "club", the slam-o-rama shifted from one location to another.

slam-o-rama by Speedog 2 December 25, 2010

grr-o-rama 

A series of progressive anger, resulting in grring and different levels. There are five levels of grr-o-rama. 1 being kinda pissed at maybe a stupid math problem, and 5 resulting in the hurting of everyones genitals within 3 1/2 miles.

That guy is at, like, almost level 5 grr-o-rama. Hide your genitals if you want children!

grr-o-rama by silverdoodle May 15, 2009

drive-o-rama 

Slang fifties-inspired term for when a group of people pile into the car with no planned destination, just to indulge In the fun of driving together.

There was a moment of sheer ecstatic, nearly electrical joy that ran like a current through all of us, like when my dad used to yell out, “drive-o-rama!” on the weekend.

drive-o-rama by Dr Bunnygirl August 7, 2019

fart-o-rama 

sit in circle and fart togather in one room.

yo man, last night i was in a huge fart-o-rama last night, that shit was so smelly my nose fell off.

fart-o-rama by poopman11 March 21, 2003

Punk-O-Rama 

a wicked as collection of songs from Epitaph records

The new Punk-O-Rama DVD kix ass

Punk-O-Rama by Brett Gurewitz July 8, 2003