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1.
A Bluecat is a heavy, thick dump taken by someone with a bowel disease. The Bluecat dump (so called because of its clumping ability and blue hue underwater) is indicated by a severe smell upon entry into the bathroom and an inability to immediately flush the toilet.
"That guy didn't even wipe after leaving a Bluecat in the mens' room toilet, second stall. Don't go in there."
by Sandboats August 15, 2007
 
2.
A lady that is post her "cougar days" and then some...
Dude, I am not going back to eat at that cafeteria - despite the great mac-n-cheese, it is nothing but a Blue Cat haven and all I have is a spork to defend myself.
by Retlow1103 April 28, 2011