you are a basketball water girl. you are sitting on the bleachers watching the basketball players play, the whistleblower whistled as a sign of time break. you are drinking some water when you offered the players some water bottle aswell. then tristan extended his hand out, signing that he want a bottle of water too. so you handed him one sealed water and he frowned

"that one!"

he yelled pointing at the water your holding and the one you drank at.