When reading Lord of the Flies. The amount of sexual inuendo there was when reading it out in class was horrific. That coupled with some inappropreate leg stroking and a 60 year old teacher who didnt understand much made for quite an interesting lesson.
geography, coastal erosion protection.
no one else found it funny, which just made the whole thing worse
I laugh at the dentists, optician and the doctor which was so embarassing when he was trying to check my throat!
I laughed at the end of Titanic, I'm sorry but Leonardo De Caprio sinking underneath the water is HILARIOUS...well in my brain.
Oh and in Biology when the area of the brain called the Pons came up it set me off. Also if when I'm giving a presentation something goes wrong e.g. for some reason once the first word of every line was cut off, I get the Giggles big time.
My friend once also burst out laughing in the middle of a science class when we were supposed to be sitting silently. Apparently she started thinking of dancing hippos. The same friend let me read her English coursework which was a tragic piece about the death of a young woman from a wasting disease, she unfortunately didn't quite get the right word she was looking for in one sentence meaning instead of saying "deteriorating" the sentence read "It was horrible watching the girl slowly detonate" Honestly I was in hysterics for a very long time...
There's been a few times that this has happened to me.
Once I was in a lecture, and I started thinking about 'Full Metal Jacket', and I remembered the part where the guy is ordered to stop smirking, and I just couldn't stop laughing in that. The lecture hall was pretty silent too. The people surrounding me heard me pretty damn well. Luckily, the lecturer ignored me.
Another time, I couldn't stop laughing in a Chemistry lesson, and what made it worse was that I knew and occasionally saw my friend trying extremely hard not to laugh. 5 minutes later, we were thrown out of the classroom despite several warnings. We ended standing out there for like 10 minutes literally, trying so hard not to laugh.