look up any word, like timebomb:
 
1.
Mgc
In common game terms, its recognized as a Multi Gaming Clan.
Did u know the "Killer Clan" went mgc ?
by Semmy January 05, 2008
 
2.
mgc
A cool runescape 2 client programmed by M.G. - now retired. Used to be the best RS2 client ever. Pwning shit like 'SytheScape' by loads. :-)
This is the best RS2 client ever; this is MGC
by Lol222 May 04, 2005