LOL...I didn't mean that one would have to cum with every single girl. When I wrote "simultaneously", I only meant the number of the girls one would be glad to enjoy in one session.
With 20 girls, it would be very difficult to shag them all, even if you're a "late ejaculator". Though, 5 mn with each girl is 100 mn (1h40 mn). It's doable for a "late ejaculator" especially if they use viagra/cialis. Because those will make them last even longer and they could sample each and every single for 5 mn. But I think it would just be a marathon fuck and I doubt one could really get a blast out of it (at least I doubt I could).
To get a blast with 20 girls, I think one doesn't have to fuck them all. The girls could all be sample by DFK some, eating pussies, sucking tits and fingering others for a while and fucking only a few of them untill one shoot his load. For instance, one could fuck 5 of them untill he cum. Then, when they're horny again, they could fuck another 5 to make it 10 girls fucked. So 10 would have been fucked and the others just enjoyed with DFK, tits sucking, and pussies fingering
Personnaly, I think 6 would be fine for me. Like bro
Tristiany, I intend to try it in Thailand (Pattaya), because it's cheaper, so affordable for my low budget.