Awl reader-friend Rick Paulas writes in with an excellent point! "Every now and then, I'll meet someone (usually a friend-of-a-friend, and usually in a bar) who, for whatever reason, I absolutely hate. Most times, the disgust comes from them mentioning their love of Red Bull, bringing up The Hills in any way possible, or being outspoken about their conservative views. Other times, it comes from the knowledge that the person I'm talking to will never take sexual interest in me. Either way, the end result is the same: I begin mocking them to their face." But!
"This differs from your standard in-your-face mockery in two very important ways:
(1) The mocked party does not know they are being mocked, either because of their low sarcas-dar or not experiencing enough conversations with me to be conditioned to my verbal rhythms;
(2) Other people in the conversation do know the person is being mocked, because they either have the ability to distinguish subtle sarcasm or just by knowing how big of an asshole I am.
In any case, it's fun and I suggest you try it with someone. But be careful, lay it on too thick and you're bound to be answered with a swift punch to the forehead. But more importantly...
There oughta be a German word for this!"
He is correct. Won't you help?

Betrunkenheimlichschmutzigkeit.
Literally, "drunken secret nastiness". (Or the Google Translate version thereof.)
EimBetturDenUre or MockenDieDummVolks
Unbewusstseintrotten
To mock via the unconscious. Eventually, the mockee will register the mockery, even if only on an unconscious level.
edhardytragenredbulltrinkenfreundvoneinemfreund betrunkenenspottenden
Das Undermineren? Also, I believe Sarcasdar was a famous Power Ranger villain.
Douchebaggery
schmoov und schtuperior.
Douchenfreude?
i really don't think mere mention of The Hills is grounds for this kind of treatment
I STRONGLY AGREE.
Remind me to mock you to your face regarding this.
"Eventually, the mockee will register the mockery, even if only on an unconscious level."
I see what you're saying, but in this case, the person Rick was talking to would NEVER register it. Ever. Not even sub-consciously.
"Sterzögert"
Geufuchyershelft
The best way to do this is to laugh atonally at something they said until everyone becomes uncomfortable. No, this isn't subtle and no, I don't have a suggested German word either. Just wanted to share.
Heibrau-Asshauleshness
Laffenzeeassenzoff-atchu.
[looking for 'like' button...]
Selbstliebensausfall. Self-loving failure. No one doesn't notice when some prick who thinks he's clever is mocking them to their face but they often don't show it because they don't want to interact any more deeply with such a clown.
What's German for "I hit on Lauren Conrad in an airport bar and she shot me down"?
Geholla!
As Adrienne Rich notes, "Violence begins where language fails."
This is a game in which you keep score. If you ride the victim until he asks, "Are you taking the piss?" and then he carries on as fatuously as ever, once you have assured him you would not dream of taking the piss, you collect one point. -- But what do you have to get all German about, why not just say piss-taking or leg-pulling?