Cap

One - 
On a straw,
the drink
was potent,
because his ammo
sought a number.
Two - 
Thirteen steps
to the bathroom
is the relation
of his cousin,
the leper.
Three - 
Marge Tofu saw
his eyes
as they sparkled,
and she offered
another night.
Four - 
So, they jumped
into a waiting bus,
where the driver
bounced.