Nathan notices Zack’s dick

As Nathan turned around to see what all the commotion was about, he saw something bobbing about in the wind in the corner of his peripherals. When he took a quick glance to double check, his heart skipped a beat. There, dangling out for anyone to see, was about a third of Zack’s very hard penis. Nathan wasn’t sure how to proceed. On one hand, he wouodn’t feel good just letting Zack with his partial penis unknowingly exposed. On the other hand, there wasn’t really a tactful way to tell the very cute boy you’re currently walking with that you’ve seen half his dick, plus he didn’t want to embarrass Zack any worse.