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1.
This is no ordinary poo. This poo is so beast that it needs to be broken in half in order to get flushed, otherwise it will just stay in the toilet bowl like a brown stone.
Man, my captains log was so big it was sitting out of the water
by Don Gulliver April 07, 2003
 
2.
What Spock found floating in the toilet.
Captain's Log: Stardate 3423:87

Spock advised me that I need more fiber in my diet.
by Tubular Bells March 30, 2011
 
3.
The Captain's Log is what Mr. Spock found in the toilet when Kirk forgot to flush.
Dr. McCoy: Spock, you look a little more green than usual...you feeling okay?
Spock: Yes, Doctor. I finally know the true meaning of the Captain's Log.
by Jump The Shark January 15, 2012