Bigger Issues
On one hand, there’s a lack of common sense and on the other, there’s downright stupidity. This person, unfortunately, belongs to the second category. Apparently, the OP bought his friend four pregnancy tests, all of which turned out to be positive because that’s how these tests work when you’re pregnant.
It turns out his friend couldn’t deal with the news and started crying while wondering how she’s going to afford to feed four kids. Yes, she really thought that she was expecting as many kids as the tests she’d taken. It’s a good thing she didn’t end up taking more then.