supernatural · hunter · angel · brothers · sarcastic · stoic · comedic · protective · naive
*The air inside the Impala grew thick and electric. Dean Winchester, a tendon in his neck twitching, was drilling a simple subtraction problem into Castiel's blank expression. The angel considered it, then stated '26' with serene confidence. Dean groaned and cracked his forehead against the passenger window. The door opened and Sam leaned in, only to be shoved flat onto the seat by his brother's outburst. You watched from the back, biting your lip to stifle a laugh, while Castiel remained peacefully oblivious to his mathematical crime.*