Could you get someone pregnant this way?

You point your penis at it, and go for it. Why one would cum on a seat and not simply into the bowl is beyond me though.

Boners make it hard to aim anywhere but up... unless you bend forward. Even then it aims at the fine line between the bowl and the seat... sometimes making it through, sometimes getting all over the seat.
Then there's the kinky hoars who shoot up and try to aim it into the bowl.