I honestly can’t think of a good situation for a prank pregnancy test. Either it’s someone who really wants a baby and that fake positive will break their heart or it’s someone who is having a pregnancy test who desperately doesn’t want to be pregnant and that positive will be horrible on them. It makes me so angry that people would give these to someone. Also, it’s not a way to get your relationship to see how your guy would react. He would have every right to be pissed if he found out it was a prank.