A strange phenomenon happened with me just a few moments ago. Actually it started the day before yesterday when I read about the Baader Meinhof phenomenon on Wikipedia while Stumbling upon. The Phenomena occurs when "a person, after having learned some (usually obscure) fact, word, phrase, or other item for the first time, encounters that item again, perhaps several times, shortly after having learned it. This is a specialised version of the effect of serendipity."
After reading it, I realised that I have been looking for some name for it for so long myself coz it has happened with me innumerable times. And this morning, while reading newspaper I read about it again. Apparently baader meinhof was a terrorist organisation and a movie made on the subject has been nominated for an Oscar in the foreign language film category.
How more co-incidental could it be, a phrase so uncommon that i learnt about it so late and now, jst within 2 days of discovering it, I confront it again. Wow! Baader meinhof of Baader Meinhof!!