The pair clashed as they tried to prove who was the better of themselves ahead of tonight's eviction.
"Do you think you're a better person than me? Yes or no?" quizzed Heavy.
"Of course I f**king do," replied Lewis.
Heavy ranted: "Why? It shows you're not humble, you're deluded, you think you're better than everyone.
"Tonight [the eviction] is going to be a shock to you, it's going to kill you [if you go], that's not going to bother me, but you're going to be like 'Oh s**t I thought I was going to win this, I told everyone I was going to win this.'"
Heavy then went on to mimic a crying Lewis being evicted before declaring himself the underdog to win.
"But that don't make you a good person, winning the competition," Lewis told him.
Heavy then gave Lewis some tips about how to be a 'better man'.
"You cut me off in the middle of conversations, you're very self centred, you're always talking about yourself, you're obsessed," Heavy told the ex-TOWIE star.
He went on: "It's quite boring when people talk about themselves all the time. It's not a very good quality. You've got to ask people about themselves."
Needless to say, tonight's eviction result could be interesting for the house...
Celebrity Big Brother airs tonight, LIVE on Channel 5 at 9PM.