He felt Jim freeze underneath him. At this point, there was nothing further that he could do to piss Jim off or make this any weirder, so Sam relinquished control to his instincts. He rubbed himself against Jim a little, the friction and the excitement making him harder by the minute. Sam pulled away from Jim's mouth for a moment to gulp down fresh air, then picked up where he had left off thrusting his tongue into Jim's mouth.