Butting in? Hardly. Porky was free to believe whatever he wanted, though; as long as he had no evidence to prove that Lelouch opposed the clubs' current efforts, it didn't make a difference. The fact that he truly didn't oppose them made that possibility even less important, but as treating it that way had the potential to open him up for attack later, Lelouch would be watching Porky closely anyway. He would have done so regardless, so why not?

"I'm not sure," he replied, sounding genuinely confused and maybe, just maybe, a little concerned. "Do you have some kind of condition? Maybe we should have met in the Sun Room." Not that Porky would have reacted any differently to his Geass there, but blaming this on allergies or exertion was much, much easier to do when they were out in the open like this. The cafeteria was annoyingly far from here, at least in Lelouch's mind. They really should have that gate installed.

"Would you like me to get a nurse?" he asked, still "concerned" but with just the faintest mocking edge to make it that much more convincing. Porky wouldn't believe it if he tried to present himself as entirely worried about him, but reluctantly worried and trying to hide it should work. Porky was old.