Silly Fringe Limericks

[catko]

For a challenge at fringeverse . But really the last one is for blue_sunflowers .

Our Astrid is strong, smart and steady,
In her job she must always be ready--
  To keep Walter preempted,
  Bet sometimes she is tempted
To sneak out and smoke some Brown Betty.

A cow in a lab? What's he thinking?
The mooing, the cowbell clink-clinking!
   But Gene's such a pet
   And please don't forget
She gives plenty of milk for the drinking.

So Peter's the key to this tale
Unless the Fringe writers plan to derail
  The point of his Arc
  Leave a big question mark,
And turn this great show into FAIL.