[Bursts out laughing, tossing his head back and letting his cigarette dangle from his fingers.]

I'm kidding, I'm kidding, marimo, geez. ...I think.

[Looks a little too thoughtful for a moment, but it's mostly for show.]

Though, you know, for science maybe...

[But another glance at Zoro's red face has him snickering again.]

Don't have a shitty heart attack now, ya idiot.