Boxer Amir Khan, 30, and presenter Declan Donnelly, 42, hit out at one another over their celebrity status.
Ant McPartlin introduced the last celebrity to the line-up during tonight's opener, who turned out to be Amir.
Host Ant, 42, asked the former world champion if he was excited to be in the ITV jungle in Australia.
But, Amir explained: "I am excited, to be honest I’ve never watched the show."Related articles
ITVI'm A Celebrity 2017: Ant and Dec take swipe at Amir Khan in brutal jungle showdown
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'I'm a Celebrity...Get Me Out of Here!' 2017 kicks off
Well to be honest, I’ve never seen you box!
Shocked, Dec playfully snapped back: "Well to be honest, I’ve never seen you fight! Let me at him!” as Ant said: "Get out, get out.