Or:
Don't bring home ping-pong balls for the cat.
I was at a customers yesterday and they had given away their ping-pong table and were throwing away about a half dozen left over ping-pong balls.  I asked if I could take them because I heard that cats like to play with them.  
I walked into our house and threw 2 of them on the ground for one of the cats to play with.  He started batting them around and having a ball.
Did I mention that we have mostly hardwood floors?
We ate dinner and the idiot cat ran into a chair, chasing a ping-pong ball.
As I got out of the shower, I heard that **** cat chasing the ping-pong ball.
All this time, the Bride was giving me the "Isn't that cute" look.
Until bedtime.
That cat played with that ping-pong ball all night long.  About 3AM, my Bride kicked me and not so quietly said "I ought to KILL YOU for bring that ping-pong ball home!  Go take it away from him!"  I dutifully got up and looked (not too hard) for the ping-pong ball and actually found it.  I brought it to bed and fell back asleep.
For 15 minutes, until he found the other one.
I moved to the couch.
The Bride, also known as She Who Must Be Obeyed (SWMBO) is still asleep.  I know I'm gonna catch hell for this one.
Ahhhh, marriage.  24 years this year and she's gonna kill me. 
And I still have 4 more ping-pong balls to give the cat.  
