Mega Dittos to Urban dictionary for letting me share the real definition of this saying!
An amount of seaman ejaculated that results over 20ml in size.
Dude, I spewed a mega-load all over the place; it took forever to clean up!
One who is the biggest vagina.
The largest of all vaginas.
Dude, he didn't even ask her out, what a Mega Vagina!
1.
v. getting you dick sucked while doing somthing hella cool like eating a sandwitch or playing video games.
Cupcake resived mega dome from buttercup while playing video games.
Name found on a limited edition lostprophets tee.
for example, MEGA LOLZ!!!!
That's simply it.... no explanation needed
Its basically when someone says something and dont know how to react so you just say " that's mega gay