Gay Arm
When a lesbian's dominant arm becomes more muscular due to a monogamous relationship....or just lots of sex
Girl 1: Have you just been lifting weights with your right hand?
Girl 2: No, Maggie and I have been together for a couple months. This is just my Gay Arm.
Girl 2: No, Maggie and I have been together for a couple months. This is just my Gay Arm.
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