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a gross old lady who talks too much, but you use it when you’re being sarcastic with people you like or hate because of something tiny, like when your best friend eats your lunch or something.
'You’re a haggalina!' I yelled when she ate my chicken nuggets.
He called me a haggalina because I spilled soda on his shirt.
She said I was a haggalina for stealing her pencil.