Rin Tin Can
Guy gets a text from his best friend says "Man I just can't keep this from you any longer, I feel so guilty: For the past year or more I been tappin' your wife. At first I just figured it'd be just a one-time thing but I couldn't get enough of it so pretty soon it was an everyday, sometimes all-day thing. I hope you can forgive me and I promise it will never happen again." So the guy goes in the house, shoots his wife, and he's just goin' out to the car to go shoot the other guy when his phone blings with another text from the same guy, says "Oops: Typo: WiFi not wife."