Crazy Song ; Craaaaazy Song

For a brief period today morning a certain bollywood song 'Desi girl, desi girl' was playing at home. The tune goes something like 'a dessi girll ; a deeeesi girrrrrlllll girl girl girl...'. Ever since , I just cant get the song out of my head. Really irritating. The song has hijacked my brain and ever since I'm wandering about the house aimlessly humming the tune over and over. And over again.

Having a lot of spare time, I started googling to find out more about this and a few searches later, Bingo! A search for "song stuck in head" gave the result, the phenomenon is apparently called earworm. Heres a description of 'earworm' pulled out of wikipedia :

Earworm, a calque of the German Ohrwurm,[citation needed] is a term for a portion of a song or other musical material that repeats compulsively within one's mind, known colloquially as "being stuck in one's head". Use of the English translation was popularized by James Kellaris and Daniel Levitin. Kellaris' studies demonstrated that different people have varying susceptibilities to earworms, but that almost everybody has been afflicted with one at some time or another.[1] A more scientific term for the phenomenon, involuntary musical imagery, was suggested by the neurologist Oliver Sacks in 2007.[2]
There have been claims "that earworms may be songs or tunes that become stuck in the phonological loop, the part of the brain that rehearses verbal information in Baddeley's model of working memory. This usually happens when a person sings the song or hums the tune once and then repeats it in his or her mind." However, this information is not supported by any scientifically published information and was presented only as a guess of an unknown author.