What's the context? Do you mean "Internet meme?" An Internet meme is a picture, video, sentence/expression, or website that spreads very quickly on the Internet. An Internet meme usually imitates or pokes fun at something in real life (usually culture, religion, politics, stereotypes, etc.)

Just a trivia: In Turkish, "meme" means "boob".

I also agree with J Savage's excellent answer.

Looks like jsavage already answered your question. The first time I saw the word "meme" used was in reference to visual memes in Japanese animation. Peter Payne of J-List likes to point them out on occasion in his blog. As he wrote recently, "Being a hyper-connected society, Japan has their share of ridiculous memes, and it's interesting to see which of them make the transition from Japan to the wider world or vice-versa."

This is not a recognized word. It might be a child's nickname for his grandmother, aunt, or Mother. However, it sounds like baby-talk to me.