Oxymorons happen all the time. Example: Saturday morning at the town dump and your neighbor, while throwing away what looks like a perfectly good lamp says, “This lamp never worked right and I don’t understand. I just bought it at WalMart.” (BAM! You now have your first oxymoron of the day and it’s not even 10AM!): A Quality Purchase from WalMart.
The way I see it, my job as a wordsmith is to record oxymorons so that our understanding of language improves over time and I enjoy a tiny inner trickle of bemusement that’s just for me.
The following list contains oxymorons that I have collected recently (along with horribly named hair salons like, “Hair Today, Gone Tomorrow” and “The ClipHer Ship” but that’s for another time.)
I hope you enjoy them as much as I do and, please, feel free to add your own. Just not “Jumbo Shrimp.” That one is as old as dirt. (BAM! Cliche Alert!):
Fat-Free Ice Cream
Department of Environmental Protection
Fluorescent Lighting
Rap Singer
Party of One
Egg White Omelet
Late Fines at the Free Public Library
A Gripping Performance by Adam Sandler
A Film by Adam Sandler
Funnyman Adam Sandler
Ohio-style Pizza
State Worker
White Chocolate
Actor Tom Arnold
A Wait List at the Olive Garden
Mrs. Harvey Fierstein
and
Music by Sting.
Fresh Air and Sarcasm 
Ouch! The snark! Best one was the two (hey there’s an oxymoron) Adam Sandlers references.