Here’s one tip that’s always worked for me: when having sex, change the thrusting angle. More specifically, if I’m in missionary and I feel the beginnings of an orgasm and I don’t want to cum yet, I’ll raise my hips and move then forward slightly so that my thrusting angle is a bit more downward than whatever it was previously. The feeling is one of being higher and more on top of your partner.
This changing of the thrusting angle, for want of a better term, also works well in the doggy position. Just move forward and raise yourself up very slightly.
It can also work in cowgirl, either facing you or facing away from you. Just have your partner move back slightly or move a little less forward.
I find that by changing the angle this way, the thrusting pressure is redirected from the sensitive, underside of my penis to the top side. And once I do that for about 15 or so seconds I find that the urge to cum has subsided and I can go back to my normal thrusting if I want.
It’s really a form of edging and a variation of the traditional wisdom of slowing the pace. You can slow the pace and vary the thrusting angle, all at the same time.
And another plus is that women seem to like it when you change things up with the thrusting angles, so it’s good for everybody. And I’ve been using this little trick successfully for years.
Hope you find this useful.