Frankie Boyle definitely started it (what would you expect?), but X Factor finalist James Arthur also got in a few decent jabs when the two began sparring on Twitter.
"James McArthur [sic] is like a cross between a tramp and a duckling #xfactor" tweeted the comedian on Saturday, launching a tit for tat that lasted three days. @JamesArthur23 yesterday tweeted: "So apparently I need a sense of humour...Or do you mean a sick mind and loser mentality? Glasgows top comic? I'm proud to be Glaswegian!"