Gina had so many good ones... Just the way the girl said "Ferrero Rocher" and "Margherita Pizza" still cracks me up.
"Bottles up!"
Once, when pissed at Dexter, she walked in and just matter-of-factly said "Explain."
In her last challenge as Big Brother's BFF when walked up to Charlie with a sweet "You've had a good time in this house..." when told to confront the person she most wanted evicted.