An incest orgy, consisting of uncles, brothers, fathers, sisters, mothers.
That girl/boy has had his fair share of fornication with his/her sisters/brothers and mother/father. They do a weekly Alabama Slam-O-Rama at the trailer park!
A school competion, usually for some sort of smart people thing.
I got in the spelling bee, and man, it was a nerd-o-rama in there!
Someone who bails repeatedly when trying to learn a trick in BMXing, Skateboarding, etc...
1: DUDE I CANT GET THIS TRICK
2: you're just having a bail-o-rama
A gathering where one guy has multiple baby mamas at this gathering, typically a child's birthday party.
It was good to see everyone getting along at the Baby Mama-o-rama yesterday.