in back pockets
Makes me visualize condoms,and my take of this is sexual in nature.
I am probably wrong, but the 'parrots' makes me think of those who simply spit lines at women. And the 'zombies' are those that seek conquest like Ahab did to the white whale, oblivious to the damage done to themselves. IE: 'empty houses' I really liked it, even though I suck at both writing and understanding poetry. But I truly did like this.