"It's gonna be a slow come" relates to betting on the come, then rolling the dice for your point.
If things start looking bleak, either on that roll of the dice, or when waiting for an important business deal, you know it's gonna be a slow come.
Before we get that truck unloaded it's gonna be a slowcome.
Ruler of Lake Titicaca. Rumored to have a bunghole that gets very angry if it does not receive toilet paper. Cornholio the Great is often seen walking around with his shirt over his head and his hands in the air, chanting songs about his power, and his bunghole.
"I am Cornholio! You do not want to face the wrath of my bunghole, for I need TP!"
Butthead: Shut up, Beavis! (uh huh huh huh)
Beavis: Um, okay. (heh heh heh heh).