Yeah, but it is the same thing. Unless someone cums on their hand and holds completely still and covers it up, it is going to dry up and die just as it would if it was on a pair of jeans!Lol!
I wouldn't worry about being pregnant from it. Because the truth is, he probably touched other things, or rubbed his hands together or something, so the sperm were probably dead.
And nikki is right: five hours(if not dried out yet) three days or 72 hours if stored air tight- 7 days if kept refrigerated and who knows how long frozen. Nikki did do her research!