A boy is told to bathe

The pail of water is bath,
but the dipper, ah,
that is a reusable
Falcon 9 rocket,
he holds it, still,
at the bottom of the pail,
and starts the countdown,
pulls the dipper  
out of the water,
bottom upwards,
a stirring moment.  
  
Hand provides thrust,
water is the fire  
pushing earth away,
  
the naked boy stands,
in the slow motion of a rocket,
he makes the dipper tremble  
as it rises, as rockets do  
in the throes of launch,
he whispers a swoosh,
boy blasts into space.