The 20-year-old, who is expecting to be evicted this evening, switched the group's agreed list of shopping when she visited Big Brother in the Diary Room.
Caroline's fellow housemates were stunned by her actions when the delivery arrived, immediately rummaging through the bags to see if any cigarettes or healthy food had been included in the order.
An appalled Luke Anderson said: "It's not funny because it's been done before."
Even Caroline's friend Scott Mason was surprised, commenting: "Caroline, this just isn't amusing."
Deana Uppal described Caroline as a "d**k" for her prank, while Adam Kelly complained: "We're not going to eat all this. In the three weeks that's left we're not going to eat it. It's all a waste."
Deana added: "She didn't do it so she could eat it, she did it to be remembered. The thing is, in her defence, she can always remember and laugh at it."
Big Brother continues daily on Channel 5.
Eight housemates face possible eviction this evening with only Scott Mason and Becky Hannon safe from the public vote.