India, Feb. 13 -- Brain teasers have always captured our attention, no matter the form. Some are age-based, some focus on optical illusions, while others involve maths or lateral thinking. But every now and then, a puzzle emerges that gets everyone talking, scratching their heads, and sharing their guesses. If you're a fan of these mind-bending challenges, we've got a treat for you!

(Also read: Brain teaser: If you crack this tricky maths puzzle, you'll earn true genius status)

One such brain teaser shared on Instagram by the account @br4inteaserhub has left the internet puzzled. It reads: "2 dads, 2 sons, 1 grandpa, & 1 grandson entered a cafe. How many men entered the cafe in total?" At first glance, it might seem like a simple questi...