Squeeze

[dancingdoc2]

Simple: Insulation.

The skin of the condom adds a barrier between the hand and/or mouth and the nerves in the penis.

If you want better stimulation, add a bit of lube to the glans only of the penis. This will give your penis some wiggle room and that will transfer more friction.

If you are with only one (1) partner and both of you are free of STDs, then you might consider using a natural condom. These are thinner, will not offer protection, yet will keep sperm from going where you do not what them to.

Polly condoms are also better at transmitting friction than Latex.

Mike, if/when you are able to retract your foreskin, then roll it back before rolling the condom on. Your exposed glans will have one less barrier.

[Pill]

With a condom, there is a layer of latex separating the skin of your penis from the flesh of your partner. This diffuses the pressure out some, causing you to feel less, especially the finer details (i.e. the texture of your partner's flesh). Since those details are a big part of the stimulation that pushes you towards climax, the lessening of this stimulation lessens the buildup towards orgasm commensurately.

I suspect that it may also have something to do with the constant pressure applied to your skin by the condom. One's sensation of touch is provided by several different subtypes of touch receptors. Some of these touch receptor types are what we call 'quickly adapting,' meaning that when they sense something constantly they soon stop reporting it. I conjecture that the degree to which these receptors adapt (adapt = stop reporting a sensation) may be increased by the constant pressure of the condom.

Meissner's corpuscles, a type of touch receptor which senses vibrations and light touches, are concentrated in many places where we experience sensual touches (breasts, foreskin, clitoral hood) and are among the most rapidly adapting receptors in response to physical pressure. I hypothesize that Meissner's corpuscles may be responsible for much of the sensation deadening by condom usage.

[edit]

This hypothesis would predict that using smaller (tighter fitting) condoms would increase the degree to which sexual stimulation is minimized, which I take it is desirable to the OP. I don't know if that is the case but would be interested to find out.