a limmerick? - no, it doesn't 'count'.
a poem? - no, its too short.
Ah! I know! a pensieve it is!!
Routers to writers,
Sigh! my mind drifts.
Mousse to musings,
how quickly it shifts.
Oh, wandering mind,
What did you find?
No reason, no rhyme,
Do you need a chime?