I think your poem could be much funnier. It lacks that 'WTF appeal' for me. Far too many pointers. Far too long.
These biker boys
fuck off their slippers
to jam their cocks
in macho zippers — unknown
i like it up until pants. after that it's pretty much a shoe full of rain. — unknown
OK, I'll work on it. It's now much shorter yet. — netskyIam
The joke, I hope is the catch of an anus in the zipper, not the penis.
Whitman and "fundament" are closely linked--google for the old sense of the word.
I want it to be funny and misleading without actually being overt dirty talking, as the first commentor made his example. — netskyIam