1. Insult. A person (usually a woman) with low cultural tastes and interests, poor education, and inflated sense of self worth; a trashy person who is vaguely bagel shaped.
2. A social leech who thinks they are contributing to society; a person who gloats about their non-efforts as immeasurable while belittling others so as to derail and steal from them; a mooch.
Name is such a trash bagel! She gave grandma a big sob story about her break up and not being able to afford rent and then used the money to get fillers and go outlet shopping.