What Happened?

Noticing that both John and Jack had shot impossibly large loads into the two wives Emilia began to wonder what could have caused that, never in all the sex her and Jack had had prior to this had he ever came for 8 minutes solid, nor when he came had he ever kept fucking her to orgasm, truth be told their sex life was always focused on his gratification. She looked at the lake of cum on their bedsheets and asked both of you to explain this. Both of you explained that neither of you had ever felt as big in the cock or heavy in the balls as you have since you got to France. She wonders if there is something airborne causing this.

After everyone has cleaned up and gotten dressed the girls say they need to go into town and get some morning after pills just to be extra safe. The husbands go with their wives to the pharmacy and you head to get more of the tasty local booze. When you get to the cashier you find that he speaks english and he asks you the usual touristy questions, he then winks at you and asks "you are having the fun with the ladies tonight?" , you look puzzled and ask how he knows that. He explains to you that this is made of a plant that grows locally there that has effects on the human body, he explains that when men take it it causing them to need to breed, when women take it it makes them very horny. He also explains that it overcomes any chemical birth controls known to exist and the only way a woman would not risk becoming pregnant from sex with a man on this would be to have him wear a rubber and pull out when he comes, if he comes inside her then the condom will rupture due to the unnatural load placed on the material. He explains that the nuts you bought yesterday are from the same plant but unlike the drink are undiluted so are purer forms of the same chemical. He explains that someone who has eaten the nuts will have release pheremones that will make nearby females do what you want and they will want you to use them. He left the store with some possible answers and some more of the tonic. He now had to make a choice.