I'm Outta Here Funny Farewell Card - Short and to the point, this card is a good choice for farewells of all kinds: retirements, divorces, relocations and more. It could even be used for a "Dear John" note! Sold at DancingPelican on Zazzle.
Someecards is the best site for free, funny ecards. They have greeting cards for every occasion from important to utterly pointless. Send greetings for apology, birthday, baby, breakup, congratulations, encouragement, farewell, flirting, friendship, get well, sympathy, thanks, thinking of you, wedding, workplace, and holidays like Mother's Day, Father's Day, Valentine's Day, Thanksgiving, and Christmas.