Tik Tok? Nah man, What You Waiting For is where it's at.

Not only does it have 'tik-tok' repeated throughout the song, but it's Gwen.  She sang about Bananas, and taught thousands how to spell everybody's favorite yellow fruit!  Everytime I see Ryan tweet his obsession about Tik Tok by Ke$ha, I instantly think of this song instead of the one by the new girl on the block. 
 
Has anybody else really heard this song before Ke$ha came out with hers?  Do you think the same way I do?
 

I don't give a flying fuck about Gwen or Ke$ha.

Personally, I prefer Ke$ha's Sing-talk style over Gwen Stefani's more generic pop. Ke$ha's song also has a very electronic-club feel in its production which I prefer. At the same time, it's all pop music. Although both these songs seem like they're just screaming for a mash-up.  
 
EDIT:  Looks like somebody already did. 

That video makes me realize how sad I get thinking about how far downhill Gwen went...

I have never heard any of these songs.

I'm partial to Gwen Stefani before her solo career. Also, when did that come out, like 5 years ago or something?