For those wondering: In the segment before this, Chris's ex wife Ingrid Tarrant is on a celebrity special of a cooking show called 'Britain's best dish' or something like that...and she cooks salmon wrapped up in foil in the dishwasher, hence the callback at the end of this clip.
"I'm from the Black Country, you're from the Black Country - Chris is from the Home Counties but he started work in Birmingham with TISWAS - it's all suggesting the letter B, so go with Blue"
"There is no blue, only cyan"
"Well that's the colour for blue in the printing process - go with cyan"
Taking a bite out of a salmon, especially with the skin still on and heated up in a dishwasher instead of cooked must be disgusting. You'd almost have to be starving to death and one step before having to eat your pets