Not everyone has a boring sense of humor (...)
A sense of humor is what makes the world *less* boring. People who find more things funny might have a "broader" or "less refined" sense of humor but it makes their lives a lot more hilarious.
Anyway - sometimes the joke is obvious. Sometimes it's not. It doesn't matter whether you find it funny or not - if you SEE the joke and understand its purpose - things are fine.
If you don't see something that was obviously a joke, not only don't you have any rights to dis the people who made it (once someone points the joke out to you) - you should almost feel like an idiot for missing something so apparent to others.
Also - don't act like some things are more worthy of being found funny than others. Either that or justify it in a elaborate way.