My absolutely favorite verse, from the version sung by Mishelle Shocked:
Sure enough that Johnny was with Miss Nellie Bly*
he saw the gun in Frankie's hand and said
Frankie, baby, I swear I won't treat you wrong no more
and she said huh, that's for sure
'cause by the time she was done with that there gun
her lovin' man was not gonna treat her wrong, no more.
*the proprietress of a whorehouse, in this version.