I’m not 100% sure whether multiple orgasms are classed as more that one during the same sex session, having orgasms repeatedly one after the other, having one then achieving one a short time later, or all three.
The reason I asked is, my OH orgasms really easily but when she has she’s always said she was to tired and physically drained to even think about doing anything thing more and so has always believed she wasn’t capable of multiple orgasms.
So last night was her night and I bought her to orgasm with fist penetration and clit stimulation with my tongue, she loves that as they’re normally one of her strongest orgasms and as usual she was totally spent, anyway about 30 minutes later we was in bed and I just played with her clit with my finger, no penetration, and within 5 minutes she orgasmed again, it was just as quick and easy as normally, she said weirdly it was a completely different orgasm to before, couldn’t explain why, but she was just as knackered, we saw this as her first ever multiple orgasm because they’d happened within an hour of each other, and honestly I believe if I’d given her 30 minutes she could have been bought to orgasm again.
Obviously this had opened thing up for us even more!!
So what others experiences with multiple orgasms?
I’m interested as I always thought this. But I suppose it’s really what you as a individual wants to class it as.
I initially thought the same one after another consecutively. Which is hard for me, I have on occasion been able to achieve a second wave. Now sure what factors allow this but it’s great.
My wife will have her bigger first orgasm and then what she call mini ones after if I keep stimulating her. I think this usually applies to women more as they are more able to ride the high and not have the recovery period of men.
But in the same sense during our longer sessions we’ve both experienced at least a couple main orgasms.
My understanding is that multiple orgasms come one after the other with no rest period in between.
What @rockstar said. Usually for me it’s one big orgasm, then kind of “aftershock” orgasms, though I have had a few surprises in the past 
There’s nothing wrong with having multiple orgasms in one session, however, they’re just not the textbook definition of multiple orgasms 
I’d say that would be classed as a multiple orgasm as it was still within the same session in ways
Hell yeah 2 is multiple and anything more is icing on her cake
With the OH, she can on occasion depending how turned on she is, orgasm multiple times without a break, during the same piv session, with the help of her wand.
It is usually my loss of erection which stops these extended sessions.