....I'm studying at the far end of the break room and someone yells HI HOW ARE YOU!
.....I'm reading my textbook with my book flat on the table and someone walks up to me, LIFTS UP my textbook to look at the cover and goes "What are you reading?!"
.....I'm eating soup in the breakroom and someone looks at me and asks if I'm eating barbecue because 'omg the hallway smells like it and it's driving me crazy' (Am I hiding babyback ribs in my teeny soup bowl?)
.....I'm in the breakroom listening to something with my earbuds and someone walks up behind me, pulls out an earbud and goes "I just wanted to say hi"
I would avoid the breakroom but it's either there, in my car in the parking lot (frowned upon) or stay at my cubicle and people think I'm working so interrupt.