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1.
n. A male coworker with whom one has an especially intense, possibly flirtatious, relationship, as with a boyfriend but limited to matters of work. A contraction of "work boyfriend." See also wirlfriend.

Note: If two coworkers are actually dating or having sex, then the terms "woyfriend" and "wirlfriend" would not apply.
Jason is always finishing your sentences for you in meetings. He must be your woyfriend.
by Thomas Earlham April 30, 2009