A Massive Ejaculation of EPIC Proportions due to an extended period of time not having sex (with others and/or self).
Most notable features of the EpicEjac is the eyes rolling in back of head twice, the entire body convulsing in rapid non rhythmic motions, full body sweat explosion, a high probability of the guy making animal sounds like a horse, monkey or lemming.
this also makes the guy pass out faster than 15 seconds, highest record is 3 nanoseconds before collapsing and drooling profusely. humping convulsions may persist past collapse for up to 10 minutes.
for the next day the legs may feel noodle like as most blood has remained in the nether regions, if the symptoms pass eight hours brain damage is likely.
Dude... i had to go to the hospital yesterday after my EpicEjac two days ago... seriously...i think i lost my since of smell from the brain damage. The doctor told me i have to whack it twice in the morning to get back to a normal Ejac.