Hm. [ Mentioning that Saitama knew Sonic before isn't that troublesome, but for Somic to admit he also knew Genos can pose a problem. The last thing Saitama wants Genos to suspect is that they know eachother. It would be too annoying to deal with. ]

Well you know that last part is a bunch of crap, huh. You could totally kick that guys ass. [ He's joking around a bit to hopefully pull Genos from any kind of deep spiraling inner monologues he could be in. Not that it would take long to potentially piece things together. ]