Men and Boys: Boys are more likely to cum easier. It doesn't take long. Most of the time, a male's cum is a sticky, hot, fluid that melts into a soft substance.
Women and Girls: Since girls have a more complicated body, it's rarely a girl will cum. If she does, it's a very small amount. Extreme stimulation in the clitoris and vagina will help create more. If a women does cum, it will be more fluid, watery like.
"Ugh, I can't cum babe.".