J-Dub
n.— «The SY’s, as the community members call themselves (pronounced “ess-why”—it’s a shorthand for “Syrian”)…came to derisively refer to the Ashkenazim as “J-Dubs,” a play on the first and third letters of the English word “Jew.”» —“The Sy Empire” by Zev Chafets New York Times Oct. 14, 2007. (source: Double-Tongued Dictionary)
Further reading
TTWWADI, (pronounced “tee-tee-waddy”) serves as a useful bit of shorthand for That’s The Way We’ve Always Done It. This is part of a complete episode.
Related
San Diego journalist Kelly Davis reports that an automated transcription error resulted in the phrase serious mental Elvis. This is part of a complete episode.
Related
“J-Dub” is also used by Mormon missionaries (and perhaps others?) to refer to their principal rivals, Jehovah’s Witnesses.