He wasn't holding a weapon or anything so conspicuous but his balled up fists looked ominous enough all on their own. It was a clear signal of the things he wasn't saying; you are walking into dangerous territory.
Keep laughing and see where it gets you. You are not dealing with your run of the mill, red-blooded man. As if Juri had tons of experience with even that.
Everything about Marino's body language warned Juri to shut her mouth and start apologizing and yet she just couldn't make herself do it. The harder she tried to get control of the giggles the worse they got until she honestly thought she was going to be sick.
Through it all, Marino stood there with those balled up fists and storms rolling across his face. When she was finally able to get some semblance of control over herself, she cleared her throat and tried not to meet his eye.
"Sorry," she said, her voice strained with the effort of maintaining control, "but you have to see how silly that sounds to me, right?"
