How long does sperm live outside the body?

How long does sperm live outside the body?

I wanted my wife to fuck another guy and she won't. So I went to a glory hold and jerked off a guy and collected his cum in a ziploc. I want to put the jizz into her pussy without her knowing while fingering/fucking her. Is there any risk? It will be hot to me but the sperm should all be dead right?

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Haha, you are so gay.
Better leave that poor wife of yours so you dont ruin her life too.

This. You will completely fuck up your wife. Don't be a fag

Depends. They can live awhile in the vagina so the surface layer maybe a hr but the ones inside the jizz could survive if it at body temperature for at least a day.

About two or three days OP.

How will this fuck her up? She will have no idea. I'll do it when I'm squirting her with lube.

why?

What if I zapped them in the microwave for like 10 sec.?

I'm not trying to knock her up, I just like the idea of her having another guy's jizz inside her without knowing.

Why? Because I like the idea of her having another guy's jizz in her, unaware.

You/her might get an std