MAMA'S GUY' is a term used to describe a man who is devoted to his mother. He is loyal and dedicated to her and will go above and beyond to make sure she is happy and taken care of. The term is often used in reference to the word 'PAPA', which is a four-letter word used to describe a father figure. MAMA'S GUY is similar to PAPA in that it refers to a man who is devoted to his mother, but it also implies that he is more than just a father figure and is willing to go the extra mile for her.