Jack off Control

I am 38 and live with my 18 yr old step-son. I read where guys take about 1/2 hr masturbating, to 2 hrs or more. I don't know how they do it. I jack off in about 15 min. at the most.

My step-son has as a near 8 incher uncut and he also takes his time. I can jack off 2 times while he does it once. Also, when we jack off each other I cum in about 10 strokes and so does he, but this is the exception.

We really enjoy massaging each other's cock and balls and thighs and we are working on taking our time ejaculating. Our cum shots are volcanic and our orgasms are otherworldly and it sure is enjoyable practice.