BosGuy brain teaser

Each Friday morning I post a riddle to get you to think outside the box and exercise your brain. If you are stumped, share it with a friend or colleague and see if you can figure out the answer together.

I’ll confirm answers in the afternoon so don’t worry if you don’t see your comment posted right away. I want to give everyone a chance to guess.

This week’s brain teaser: When entering you use one hole, when inside you use three holes, and when exiting you use four holes. What is it?

I think this week’s riddle is particularly difficult. Let me know what you think and best of luck to you.

Like riddles? Check out past week’s brain teasers.