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Booberella hosts late-night monster movies and always dresses in low-cut vampire-style outfits that show lots of cleavage. She is well aware of her large breasts, and constantly draws attention to them, makes reference to them, or tells people to look at them.
Booberella's trademark, unsurprisingly, is her breast obsession (with her own breasts), in combination with talking like a vampire. For example, when commercial breaks occur in movies that she hosts, she says things like, "We'll be right back! Then you can see more of my booooooooobs!" in a manner reminiscent of Count Dracula saying, "I want to suck your bloood!"
She also once appeared in an interview with Kent Brockman where they were discussing Mr. Burns' recent purchase of Channel 6. When Kent made a statement and was obviously waiting for a reply, there was a long pause, during which Booberella said nothing. Finally she looked directly into the camera and said, "Boooobs!"
When Marge Simpson was taken hostage during a bank robbery, she managed to place a cellphone call to Homer and told him that if she didn't make it out alive, he could get re-married to anyone whose name was on the list in the back of his closet. Booberella was one of the names on the list.
Booberella also has her own line of handbags.
 Behind the Laughter