Kakakata Kataomoi, the opening for the anime "Nichijou", was stuck in my head on and off for at least two weeks. It was rather frightening.

Oh god, I have Thrift Shop stuck in my head and it won't go away. Dx
For me, if I have a song stuck in my head, I just switch to a new one, lmao. -_-

You Can Get It If You Really Want by Jimmy Cliff

Little Things by One Direction.

.___.
Judge me all you want, I like them! D:

Thanks to spotting something on here, I've wound up with "The Great Milenko" by ICP running circles in my head... And it's just the opening loop too... >.<

Call me Maybe. Goodness ~ even my four year old niece sings it over and over.

That thrift shop song xD
it's been stuck for two weeks already

For Baltimore - All Time Low .
x.x' It's stuck in my head, but I can't even sing along without the lyrics in front of me.

Ever since it hit the radio I've got 'Tonight We Are Young' by Fun stuck in my brain. It's a catchy tune, but very repetitive. Especially the chorus!

Listen to a song equally as repetitive O.o
OR listen to the same song over and over again for four hours straight, you should be hearing gangam style in your head any more, XD

I knew if I searched long enough I'd find another

Slow Down. By Selena Gomez.

I feel sorry for everyone who has a mainstream song stuck in their head. I thought everyone forgot about Call Me Maybe and Gangnam Style by now.

Lately I've had Vitriol by Liturgy stuck in my head, which I don't really mind because I really like that song.