A way to describe a really amazingly good looking person.
Girl 1 - "Hey look at that guy over there"
Girl 2 - "Wow. He is megatron!"
by l5a5u5r5a5 February 04, 2009
Ultimate fail, misdoing, fatal error, or all around badness.
-I tried to ask her out, but she walked away and hooked up with some random dude.
-what a megatron
by smiley808 September 07, 2010
Former members included Stella, Scarlett & Alexis, however most recently Castile decided it was time for Megatron to move on, he felt it would be best if the three girls left paving way for other actors e.g. Joe Batt & Rebecca Sims(Hangman)
Megatron Megatron Megatron!
by Castile March 15, 2011
Megatron is the street name for the legal high mephedrone, it's sold in many herbal high shops under many different names i.e shake and vac.
Let's do some Megatron
by Frogbox September 03, 2009
Anal penetration, with no warning, no luracation, or condom.

origin; Holyoke Ma.
Don't make me megatron you!
by Clyde Harper February 08, 2009
(adj.) is PRIMARILY used for describing the terms "badass," "the fucking shit," "insane," "mind blowing," etc.

Made famous by Australian Jason Ellis.
"Dude that beer pong shot was so fuckin MEGATRON."

by DayGlo Dax Drilling August 04, 2008
When your baby, child or infant misses a number two only to have a poo explosion a few hours later that escapes the nappy/diaper confines.
Katie ran to the change room holding her nine month old son at arms length after a megatron escaped from his pants.
by Mr Sinister6 January 08, 2010

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