while "grip" sometimes denotates a specific amount of money ($10G), it is also an expression with pimps, hustlers and gangsters for any large amount of money one is holding on to ('grip') and not letting go of except in an emergency (posting bail, paying damages, getting out of town, etc). This is known in the square world as "prudent reserve" (3 to 6 months living expenses).
youngsta: "I want to get some sick-ass'd rims for my ride!"
OG: "You betta hold on to your cheddah! You gots to stack your grip, young brotha!"
A dot is a person of one race who lives within a community or society of another race, most commonly African-Americans who live amongst White people ("black dots"). There are also Asians ("yellow dots"), Native Americans ("red dots") and Latinos ("brown dots"). There are also white dots who are caucasians who live in non-white communities.
Man! That Sharice sure likes to act white!
Yo, she can't help it, she grew up a dot (race).