The insult is a very heavy insult that could make your enemy shake in fear and get down on his/her knees.
This word pattern is commonly used when you save a goal in football and the opponent breaks down crying.
The English lexicon is implied in this extreme mental abuse method by not including
the letters E and Z and then
remembering these letters after reciting the rest of the letters in
alphabetical order stating "OH WAIT I FORGOT EZZZZZZZZZZZZ" (ez being slang that gamers commonly use as a way to say easy).
Let's suppose
little Timmy kicked a ball toward Keene in the goalie position and Keene saves the ball from going in
*Keene saves the ball and walks up to Timmy already
on the floor crying*
Keene says "ABCDFGHIJKLMNOPQRSTUVWXY OH WAIT
I FORGOT EZZZZZZZZZ"
*Timmy breaks down*
TImmy says "why you hurt my feelings bro, next time I score ten goals!"