What are the chances a girl could get pregnant from dry humping with the guy wearing nothing but the girl wearing panties and shorts?

0.999999999999999999999999999999 %

thats guessing.

If he isn't wearing anything, even if you are wearing panties and shorts, if he ejaculates and it soaks through your panties and gets into your body, then you could become pregnant. But if he doesn't ejaculate, you won't get pregnant. There is a possibility that he could pre-cum as well. This is when he doesn't ejaculate, but cum drips out of his penis. If this happens, and it soaks into your shorts and gets into your body, like I said before, there is also the possiblity that you could get pregnant.