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A specific version of Oh My Jonas. Related to one Jonas Brother, Kevin. Girl ranging from 12- 18 will generally use the term OMKJ or any other version of OMJ when talking about anything, even if its completely unrelated to the Jonas Brothers.

" Wow the concert last night was awesome"

"OMKJ Kevin is by far the hottest Jonas"
by CiaraSmith April 01, 2008
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