how do you count the "bada-bam-ba-bada-bada" part on the fratelli's song "flathead" ?

my girlfriend and i are covering this song http://www.youtube.com/watch?v=pKQK8rYZNHY – there’s a breakdown part that’s really confusing. we know how to play that part but cannot figure out rhythmically how to count it. it seems like the first half of the phrase has a different time signature than the second half of the phrase. any music geniuses out there who want to explain this to me? it almost feels like flamenco.