Hey Funkyguy,

There are creams and topics you can use which actually cause a numbness feeling in the penis. I have tried them once or twice and they do work but be careful which ones you buy, some can cause rashes, this article refers to these creams: Premature Ejaculation Creams

Hope that info helps, let me know how it goes. Oh and masturbating to the point of no return several times over has helped me allot as well.