is it his EastEnders character doing a shit in his pants, therefore becoming 'Mark Fouler'?

(Smegg Wallace The O.G. Q.R., Tue 7 Sep 2021, 8:45, archived)

Not a million miles away, but not close enough.
Clue: spoonerisms. And no, the punchline isn't "Cod Tarty".

I've got to go to work now, so it'll be a while. Try to contain your excitement.
(The Porcupine From Purgatory katsu revival trust, Tue 7 Sep 2021, 8:47, archived)