[header] How to act around guys [title] Find common ground. [step] One thing you can do around guys is to look for things you have in common so you can get an interesting conversation going. It doesn't have to be super deep and can be as simple as your mutual affection for community or your lifelong love for the cubs. 
Look at the guy's clothes, binders, or notebooks for clues about what you may have in common and start a lighthearted discussion about it. [substeps] You don't have to find it immediately.