gui
a synonym for pussy,vagina, vaginal cavity, shit like that, can be used by anyone( but only sounds good in a black mans mouth). this version of the word was founded in technology class:

can also be a sub for bitch, broad, redbone, bobblehead, shit like that.
teacher: alright class GUI: what does it mean.
nigga: yo dats wat i got from ya momz:
other nigga: yea well ya ass better be happy dat ya moms GUI is nasty ass hell,