Top Definition
An onaniliker is one who, for whatever reason, "likes" their own posts/comments on Facebook. Closely related to likomania (the nymphomaniacal "liking" of posts, as in engaging in a "liking spree")
Yeah, she likes up everything, including her own posts. She'll like herself up all night long. She's a total onaniliker
by EvilRubberDucky January 27, 2011

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