Good grief, that's horrible. What could someone get out of doing that? Gah.
I understand the desire to take hallucinogens oneself, but what's the point of giving them to unsuspecting people, especially children?!? As for the pregnant woman, I don't know whether the LSD would have any impact on the kid-in-utero, but maternal stress isn't good for 'em, and getting dosed must be stressful -- even more if you've never tripped before.