A gangsta dad can usually be see walking around pushing a baby stroller with his white trash girlfriend or wife.
A gangsta dad will usually be dressed like a total "g" and will act the part. (walking and talking like an idiot)
A gangsta dad is most likely a horrible father.
How to spot a gangsta dad:
flat beak baseball hat tilted upwards
a sweat suit
pants to his knees
big ass chain
douchey chin strap
Frank: Yeah man that guy is a total gangsta dad.