by Clyde Harper February 8, 2009
Something that is huge or really big, usually used as if something is really bad (because Megatron is the bad guy in Transformers)
by Cerpin Taxxt October 29, 2006
A crazy ass bitch who will stop at nothing to get fucked up. A good friend, but also a good friend who is always willing to fuck some shit up. The girl who gets high before night class and brings fruit loops. The girl who almost quit lacrosse to go on spring break, because she wanted to fuck shit up so badly.
by thebabymaker January 24, 2013
by smiley808 September 7, 2010
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 4, 2009
An obese female, usually capable of consuming large amounts of "energon" such as chips, pizza, hamburgers, etc. in a single sitting. Megatrons tend to be rather obnoxious or loud, often being heard over most talk in a room.
"Bro, I was trapped behind this megatron at Wendy's. She was so loud, I couldn't hear anybody else in the room!"
by hurr durr herp derp January 5, 2012