I do remember that one. This isn't an exact copy of the joke as posted a couple of years back, but its probably pretty close.

Title: I think my wife is cheating… Please read!

I’ve suspected for some time that my wife has been cheating on me. The usual signs…phone rings, but if I answer, the caller hangs up. My wife has been going out with the girls a lot, I stay awake to look out for her cab coming home, but she always comes walking up the drive as I hear the sound of a car leaving, around the corner, as if she has gotten out and walked the rest of the way. I once picked up her cell phone, just to see what time it was.. She quickly snatched the phone out of my hand and screamed that I should never touch her property. I have never broached the subject with my wife. Last night she went out again and I decided to check on her. I decided to park my Harley Lowrider next to the garage and then hide behind it so I could get a good view of the street around the corner when she came home. Crouching behind my motorcycle, I noticed oil leaking through the gasket between the rear head and rocker arm cover.
So…is this something I can easily repair myself?
Or should I bring it to the dealer?