Call me insensitive, but as someone who experienced 9/11 as an adult, being able to enjoy actual funny jokes that reference the attack is kind of refreshing, especially jokes created by the generation born after it happened.

I have nothing concrete to base this on, but my observation is this:

• A 9/11 joke written by someone who lived through it is more likely to be about 9/11

• a 9/11 joke written by someone born after it happened is more likely to use 9/11 to punctuate a joke about something else

Either way, I find the latter group funnier.