A VERY attractive Female. It is MOSTLY associated with a Females way of life or personality, but can also be used to describe her looks too. Essentially every Female is a PhatMami it just takes the right Male to bring out that Phat Mami inside of her that shes been storing for the correct guy.
Holy bananas !! You see that girl over there with the glasses the brunette? She is such a Phat Mami..
I took Rose out on a date last night and I really got to know her more. She is totally a Phat Mami.
A middle-aged South Asian woman. Derives from the words Desi (A synonym of Indian/South Asian) and mami (Hindi for aunt). They like to go for walks every evening and are often (though not always) kind of chubby.
Oh, the Desi Mamis are going for their walknow. It must be 5 PM.