Mommy issues is actually the exact opposite of being a momma's boy. Just like having Daddy issues is the opposite of being a daddy's girl.
A guy who didn't have a mother (figure) or that hasn't had a close relationship to her, lacking motherly care.
" Guys with mommy issues usually turn out to be players and seek women affection through sex/ have bad image of women. Or think they want a gf/wife but really want a girl to act like their mommy. Also usually those with commitment issues too"