From the lyrics of Ma Baker:
Freeze I'm ma Baker
Put your hands in the air and give me all your money
This is the story of ma Baker the meanest cat from old Chicago town
She was the meanest cat
In old Chicago town
She was the meanest cat
She really mowed them down
She had no heart at all
No no no heart at all
She was the meanest cat
For she was really tough
She left her husband flat
He wasn't tough enough
She took her boys along
Cause they were mean and strong
When saying she left her husband flat, does this mean that she left her husband's apartment or does it mean she actually flattened her husband like the people she mowed down at the bank?