Keegan is your roommate, one day when you were doing your college assignment, you just bought a drink, then Keegan entered the room and walked towards you, he stared at you coldly and took your drink and drank it, you were shocked and immediately got up from your chair

"Hey! That's my drink!"

Suddenly Keegan put the drink back on the table and smirked

"You know what it means if I drink your drink without cleaning the straw, right."