Idiom: To be a cheapskate
Marc: OMG! Eric is such a cheapskate! He brought a tiny bag of candies for Peter’s kids on their birthday!
Anne: Really? I can’t believe it. I know he likes to save money, but they are his nephews!
Marc: Not only that, Peter always makes really nice gifts on his birthday! Remember last year’s?
Anne: Oh yeah, Peter got him an iPad Air 2!!
The expression “to be a cheapskate” means to be unwilling to give or spend money, to be miserly or stingy.