A brother who, due to an incestuous relationship between one's parents, is also a male first cousin.
by sarge42 July 13, 2010
Get the brothercousinmug. The opposite of a cousinbrother.
by brothercousin November 25, 2014
Get the brothercousinmug. person who you assume has mental disabilities due to genetic problems from being inbred, you assume they are simultaneously someone's brother and cousin.
'man that guy has been trying to push open that pull door for like 3 minutes.'
'he's a brothercousin, no doubt.'
'he's a brothercousin, no doubt.'
by saucebaus August 25, 2011
Get the brothercousinmug.