(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."
The horrible contrast resulting from when an individual has naturally red or orange hair, dyes their hair black, and does not re apply dye to subsequent re-growth.
'Yeah, she had orange roots but the rest of her hair was black',
'so she looked like a burnt carrot top?'