The roll of fat that peeks out from under a shirt and drapes over ones pants. Akin to how a muffin usually overflows its wrapper. Typically exemplified by large women in tight clothes.
(verb)
1. To jump from Wikipedia entry to Wikipedia entry through related links until you've ended up on a subject completely unrelated to the subject you started with, e.g., starting at socioeconomics and ending at Carrot Top.
2. Similarly, in a conversation, jumping from topic to topic until neither party remembers what subjects led them to the final topic.
Sarah: "Good lord. How did I carrot-top from Lindsay Lohan to the Hanshin earthquake in Japan?"
Mark: "...and so obviously Kara Thrace was an angel sent from the one true God--"
Abby: "Hold it. Back up. We've totally carrot-topped from what to get for Beth's baby shower."