What blacks can't count above 30 ? They can only learn one number per year.
Is this a joke about Black people's intelligence and/or life expectancy?
They are stupid from birth so I think that's a yes.
How you can think that all black people are dumb is dumb enough in itself. Besides being condescending, it is impossible to call and categorize an entire race dumb because of your narrow views. There are are smart and dumb people of all races.
I only said that because its statistically proven.
You need to check your stats on this, because there are no significant differences in intelligence across race. Also, your joke implies that Black people don't live past 30, which is also untrue. You should spend some time learning more about other cultures so that you don't offend people with your unkind words.