the gangsta way of giving your friend the "all-clear" to approach and attempt to seduce a female with his (or her) lower regions. It can also be used as an ok to allow one's lower genetilia to become active. In other words, its boner time.
We were all alone, and she was half naked and drunk so I knew it was time to aim high and touch the sky.
"Dude, she's hot"
"Ohhhh I know. id smack that ass into next week"
"Holy shit dude, you know what i think?"
"I think its time...