Machihya
Machihya is a girl who talks like she's the best and gets jealous if you don't like her. She'll make you laugh but will also cuss you out if you don't pay attention.
She says, 'You're my friend. I love you. But if you don't like me, I'll cuss you out.'
She texts you: 'He's cute. I'm pretty. You should like me.'
She says, 'You're my best friend. If you don't like me, I'll leave you.'