A feeling of unease or discomfort in the stomach, especially before a stressful event or when feeling nervous.
Having the squitters is not a good feeling, it makes you feel worried or scared.
Examples:
She always gets the squitters before a big test.
The squitters made him feel sick before his speech.
I don't like the squitters, they make me feel bad.
The squitters are like little butterflies in your tummy.
The squitters are so bad, I feel like I might throw up.
The squitters are like a storm in my tummy.