the Banana Check
The Banana Check consists of taking a perfectly ripe yellow banana and inserting 1/5th of it into your anus to determine your need to take a shit. If it comes back clean, then there is no need. If it comes back brown, it's time to go.
Rafael was about to leave when he felt pressure build in his stomach. Rafael did the Banana Check to determine if he had to shit or if he just needed to pass gas. The Banana Check came back brown signaling the approaching shitstorm.
Check banana
to check out a guy package when he walks by.
Girl 1: Wow. He's hot.
Girl 2: Yeah girlfriend. Check banana.
Girl 2: Yeah girlfriend. Check banana.