Why would he call my girlfriend a sugar mama?

One day I was talking to someone that I work with and I do not remember how it came up but he asked if the person I was was was my mom and I said no that she is my girlfriend. He asked how old she was and I told him that she is 13 years older than me. He had the audacity to say that I have a sugar mama which did upset me. He is 2 or 3 years older than me so why would did he say what he did?
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+1 y
He also said that he wishes he ha d a sugar mama also.
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I was living on my own for almost 101/2 years before I met my girlfriend and I was paying the bills, buying things so things can be fixed when needed, bought groceries, clothes etc.
Why would he call my girlfriend a sugar mama?
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