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The slash (same sex) pairing of Panic! At the Disco band members Jon Walker and Spencer Smith.

JON Walker and SpenCER Smith; thus Joncer is born.
-squeel- Have you read the latest Joncer fic? Spencer is adorable!
by Emuerz May 04, 2007
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the pairing of two members of Panic! at the disco, Jon Walker and Spencer Smith. It's not as hott or popular as Ryden, but still damn sexy.
joncer: second best to Ryden.
by this is totally not ryan January 21, 2007
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