During this week's family and friends nominations, Becky's sister revealed that Luke A had made a joke about Becky's size.
Luke A had previously commented: "Becky has as much respect for me as she does her BMI."
Becky blasted Luke A for the comments, describing him as "disgusting". She told friend Scott Mason: "I just wanna go, I don't want it to upset my family.
"I hope they haven't read internet stuff saying I'm fat and all that s**t."
Speaking in the Diary Room, she said: "Could you imagine being in the final with Luke A, Deana and Adam? I would rather have gone in week one!
"I think [Luke A] is selfish, devious. I actually think he's a nasty bugger, he's devious.
"I'm going on Friday and I don't want to see him again in my entire life, I literally don't want to know him."
Luke A, Becky, Ashleigh Hughes and Deana Uppal are the four housemates facing possible eviction this week.
Big Brother continues daily on Channel 5.
[Big Brother Day 56 - Photo Gallery]
Copyright: Channel 5