Rock n'Roll (and blues, jazz, etc)is polyrhythmic, which means that there are overlaying rhythm patterns, each of which is strong enough to stand on its own--In jazz notation,in 4/4 time, each count is understood to be divided into triplets, so eight notes are played as a dotted eighth and a sixteen note--making it 12/8--you can have one instrument playing straight four(often the bass) with someone else playing a swing shuffle, based on the triplet feel--For what it is worth, the Bo Diddley beat appears in Turkish and Middle Eastern Music, and is called a Ciftitelli rhythm--commonly used for Turkish bellydancing--