Those that abide by the one-way arrow systems in grocery stores, and those that don't. Which one are you?
Vote YABU if you are an arrow follower. You follow those arrows, no matter how inconvenient.
Vote YANBU if you think 'screw the damn arrows' and forge your own path round the store.
Feel free to comment and explain your choice. Undoubtedly, whichever side you are on is making you want to scream AIBU???