WOD: Workout of the Day. Crossfit offers new workouts every day so the sadists can make it a routine out of trashing themselves.
DOMS: Delayed Onset Muscle Soreness. That shitty feeling you get about 24-48 hours after an intense workout where you can't take a dump or wear your pants because the thighs hurt so bad.
DNF: Did Not Finish. You don't want this. Because, as some of the guys say, DNF is FOREVAHHH!!!