look up any word, like yeet:
 
1.
One-sixth of the number of Jews killed in the holocaust.
Hitler is alleged to have killed 6 megajews in the holocaust. Some holocaust deniers claim the figure is closer to .4 megajews.
by Jean Shepherd July 30, 2009
 
2.
A title given to someone who exemplifies the epitomy of almost all typical jewish behavior.

John forgot to pick me up from the air port, thus proving his mega jewness to me.
by Lesbianidas July 14, 2008
 
3.
a jewish person that is more than just your average jew. he or she is doesnt EVER break the rules of the jews.
DUDE you see that megajew over there he sliting his rist just because he accidently ate pork.
by Ed Gien July 21, 2009