Shop Boyz box art courtesy Republic Shop Boyz box art courtesy Republic

Which is hard, because, of course, technically, Spears and Lohan are already singers who are parodies. The Swedish group I'm from Barcelona has released a single called "Britney" that asks, quite reasonably, "Why did we care if good old Britney wants to shave her head?" And the Morning Zoo at 98.5 FM in Vegas has turned Shop Boyz hit "Party Like a RockStar" into "Party Like a Lohan," with digs like "a pocket full of blow and a point one two."