- age 19, Texas
That varies greatly. Some JackinWorld readers claim to be able to ejaculate in 15 seconds if need be, and if you kept stopping and resting at the right moments, you could theoretically masturbate forever. (Or at least until you pass out from exhaustion – something some teenage guys may be familiar with!) But for a kid who goes into the bathroom to ejaculate quickly, the average time would probably be a couple of minutes; the leisurely, in-your-bed-alone masturbation session probably takes an average of five or ten minutes for teenagers, and 15 or 20 minutes (or more) for adults.