we still have a couple of lemon giving phrases that survive "when life gives you lemons". "looks like that car you bought is a lemon"
lemons are sour instead of sweet like most fruit. my guess is that a lemon is a thing to generally make your day/life worse, especially if it seemed like a good thing at first.
makes sense in the context of a "confirmed bachelor". he's giving that lemon to a stork. he's not going to have children. someone married him and he's not going to have children. back in the day that would be seen as defeating the point of marriage, though the real implication is he's gay and married for a beard.
in the context of other relationships or a breakup they thought they were dating someone for keeps, turns out they weren't worth it. they were a lemon, looked sweet but tasted sour when bitten into.
it's a good feeling unless you can't print otherwise and the teacher is an asshole.
I had that once in highschool, so no Dean to escalate to or anything. principal took his side. the problem was, due to medical issues, i struggled to get assignments done at home. this class was 90% essays, but it was also just a history class. 100% of the material was covered in the lecture. I'm autistic and tend to remember lectures very well. so, come time for the final exam, one of the only actual in class exams, and i get nearly a perfect score. i knew the material, i just had other struggles with getting the papers done.
he used my struggle with the rest of the class as the only proof he needed to get me expelled. i had to finish my schooling at an alternative school, which was way way better anyway and honestly wasn't a setbacm in the end. it sure set the tone for my relation with authority though.