A Stinge
A stinge is a selfish butt who won't share snacks or drinks. They’re like a greedy kid who hoards candy and laughs when you get a tummy ache.
My cousin is a stinge. He took the last chip and said 'I'm saving it for later.'
That guy at lunch is a stinge. He took the last pizza slice and didn’t even offer me a bite.
My best friend’s sister is a stinge. She took my soda and said 'You can have mine tomorrow.'