mentally black
some dumb white kid who thinks he's black
jeff:hey bob have you heard of that bitch woah Vickey?
bob: yeah shes mentally black!
jeff: yeah so fucking gay right!
bob: yeah shes mentally black!
jeff: yeah so fucking gay right!
Mentally Handi-Blacked
When a dark skinned person is so damn stupid that you could easily confuse them for a mentally handi-capped person. Or a black says something super stereotypical of themselves and they don't even realize it.
Dude you are being such a stupid n-word, you should go to a psychiatrist and see if you're mentally handi-blacked