I trace the same path without leaving a mark, a journey repeated from dawn into dark. I’m neither adventure nor aimless pursuit, yet daily I travel - I am a ....

From my throat, the water will flow Over the lip, and into the waiting, open moutb A hesitant splash, a steady stream, ending with a dribbling trickle- The only deviance being when ice suddenly makes an appearance. I function well with both heat and cold, Flanked in silver, or close enough to fool, Unless, you'd prefer a plastic tool? On a hot day, I quietly sweat Holding fast the sweetly tart lemonade

Don’t guess, you’re already here. My name? Absurdly riddle-clear.

I'm always in you, sometimes on you, but if I surround you, I can kill you.

Like a tube with a smile But without any style, You'll find me-me-me! In a laboratory!