The act of looking at females ages 12 to 16 and making/ thinking of sexual comments when you are a male who is 18 years or older.
As you are driving, you see a female from behind that is walking. You don't know her age but she looks as though she has a nice body. As you drive by, you catch a better glimpse of her and realize that she is underage and looks to be in middle school or high school.
Dude, did you just go "Jai Speed"
She looked 18!
Fool, she was only 15!