If a girl was to sit on your lap with tight son but had no underware on underneath and you had boxers and pants on and were grinding and cummed but it was downward not near her vaginacould she be preg?

She could get pregnant in this situation if she scooped up your semen with a turkey baster and used that to insert it in herself.

Otherwise only someone with no understanding of how a person gets pregnant would ask if someone can get pregnant in such a situation. I suggest you read some sex education books because the local strip club isn't doing it.