look up any word, like blumpkin:
 
1.
The cat that always seems to show up, purring, whenever you have a boner, and proceeds to watch you have sex, receive a blow job, masturbate, etc. (Includes NARBs)
You: Oh look, there's the cat watching us again.
Your wife: You know we can't have sex without our beloved boner cat present.
by Frodobarfins January 09, 2009
 
2.
Cats (cool people) that walk around with boners all over the vases, and break the fine china.
A Boner Cats just walked through my home and destroyed my very expensive three-dimensional art. :(
by Bitches. The Man August 10, 2011