(boo)T(lish)us - The origins of the word bootylicious are unclear. Some have (incorrectly) named Snoop as the creator, while others give Jay-Z's "B" the credit for popularizing the word (and being quite a good real-world example of the term). The term is multi-facted, encompassing an object (the booty), an adjective (delicious), and a state of being (damn sexy). It is a misconception that bootyliciousness depends directly on the size of the booty, it is more important to have quality over quantity.
When Amanda is dancing and gittin' it in her cubicle to butty music on the radio, she is quite bootylicious.