Nickname for a guy with first name Matt and last name beginning with M-o- (such as Morris, Morrow, etc.), if you have the opportunity to meet a Matty Mo, consider yourself a lucky individual, as these people are often totally badass.
by Johnny Chimpo45 February 27, 2009

by Mo G April 17, 2008

noun. A situation or puzzle or predicament that is more difficult than it at first seemed; the opposite of a "no brainer"; something that requires more than one person (i.e. mo' than one brain) to figure out.
by Erik Patterson July 16, 2008

by chewy510 June 11, 2006

Another word like bullshit. Mo shit is defined as when someone is pulling an extra dose of bullshit and has advanced to a higher level.
by AnastasiaBeeverhausen March 16, 2018

by Mo coola July 1, 2016

by Jessen123 March 28, 2012
