It's always amazed me how a split second can change your life.
Think about it, if this guy would of just rinsed his mouth out once more and did a final visual check after brushing his teeth, or even skipped brushing that morning all together, he would of either been just ahead of that tire or just behind it and turning to his buddies laughing and saying "Holy shit that was close eh?"
Even before that - if he didn't take that dirty dick in his mouth, all those other steps wouldn't be necessary