My question is, when the time comes to orgasm, and instead of slowing or using some other method, could you force the orgasm down by squeezing those muscles really hard making the orgasm wait a little while longer?

Yes its possible. My husband does this when he knows I want more, even though he is ready to finish.

Squeezing those muscles won't help however. I'm not sure how he does it, hopefully KP will be by or a guy who has done it before or at least knows how its done to tell you.

From a girls point of veiw however, before I orgasm, if I think about something else and take my mind off the moment, and ignore the sensation, I can prolong the effect.

Hope I helped

If you are wanting to know how to delay ejaculating - which is, I assume what you're asking, I's suggest you read anything by Manatk Chia... he talks about how to conserve ejaculation and to be multi orgasmic.

The techniques are too complex to explain briefly but involve physical and mental exercises, and practice!

I have been told to put pressure on the perennium (sic).

Let me repeat the answer to your original question in case it gets lost in a discussion of techniques. No, squeezing those muscles tends to hasten climax, not delay it. There are thousands of years worth of proven techniques that will delay climax in the male. Gemini54's answer shows you a great place to start looking. Some guys do multiplication tables in their mind, some think of baseball, others think of other things. Good hunting on your new quest.

So I bought a book from Mantak Chai called "the Multi-Orgasmic Man" and it's the most amazing book I've ever read, I've had it for less than a week and last night I had my first real orgasm without ejaculating and had no feeling of "blue balls".
Following that I was completely satisfied and did not need to ejaculate.
I'm waiting for my girlfriend to get back in town and then I should be able to have multiple orgasms because she'll be able to keep me up.

Best $4.50 I've ever spent so far

Its not brinksmanship... in other words you don't run right up to the edge of the pool and wait to jump in... you sort of slowly walk up to the pools edge and jump in. HUGE difference between them. You change a portion of your focus on a totally unrelated thing to reduce stimulous you get... you can delay quite a while using this technique.