text: Yo, listen up, I got a story to tell,
  'Bout injections and drugs, man, it's gonna be swell.
  We're talkin' bromocriptine, a D2 dopamine hit,
  Inject it in your body, watch your locomotion split.
  
  Day after day, we put it to the test,
  The locomotion got stronger, man, it was the best.
  But wait, there's more, we mixed it up a bit,
  Added some antagonists to see if they'd fit.
  
  SCH 23390, a D1 antagonist in the mix,
  0.01 or 0.1 mg/kg, we played tricks.
  Then there's raclopride, a D2 antagonist, too,
  0.1 or 1.0 mg/kg, see what it can do.
  
  Guess what happened? The locomotion went down,
  The antagonists suppressed it, they wore the crown.
  No more progressive increases, no more thrill,
  The bromocriptine alone couldn't fulfill.
  
  So what does this mean? Let me break it down,
  The D1 and D2 antagonists took the crown.
  It suggests the striatal, not the ventral tegmental,
  Is where the sensitization becomes instrumental.
  
  So there you have it, the science rap is done,
  Injections, antagonists, the battle's won.
  Next time you're in the lab, remember this track,
  Dopamine's a beast, it's got your locomotion back!