When getting head you disguise you are about to bust a nut. You let it build up then go for the killing shot. If successful you cause gagging and a feeling of joy.
Justin held his his shot for the opportune moment. He only had one shot to make the kill, his sniper load was ready. Krista never saw it coming, she gagged and Justin felt relieved, knowing he accomplished his mission.
by nut commando December 19, 2007