The act of farting and accidentally shitting your pants. Your partner then licks your shitty underwear.
by muchacomadness January 14, 2008
Get the Muchacomug. It took longer for Johnny to throw up all the Muchacos than it did for him to complete the "Muchaco Challenge".
by Dave Oktsehs November 27, 2010
Get the Muchaco Challengemug.