How do you make pre ejuction longer?

There appears to be personal differences in individual males regarding the production of pre-ejaculate (pre-cum). Some guys just ooze pre-ejaculate while others simply stay relatively non-productive up until the actual ejaculation.

However, there is a technique referred to as brinking that does tend to increase both pre-ejaculate as well as the ejaculation amounts. Basically the guy just masturbates until he is at the brink of orgasm, and then skillfully backs off without arriving. A skilled brinker can go for days or weeks without reaching orgasm during the masturbation sessions. This eventually and usually results in pre-cum oozing from the penis towards the end of the brinking stretch.

Hope this helps.