India, June 18 -- From classroom quizzes to viral online challenges, brain teasers continue to entertain and perplex curious minds across all ages. These mind-bending puzzles not only provide a quick mental workout but also spark curiosity and lively debates across social media platforms.

(Also read: Brain teaser: Only a genius can tell what the fifth man is doing)

One such puzzle that has recently gone viral was shared on X (formerly Twitter) by an account named Brainy Bits Hub. The riddle reads:

"I run without legs, I sing without a voice, I cut through mountains, but I'm soft to touch - what am I?"

While some users quickly guessed the answer - most likely "water" - others were left pondering over the poetic clues.

Check out the pu...