This is great!!!
Then again, I have a hard time judging what's appropriate after working in health care for so long...
I think that your jello mold is genius (and probably delicious) and I have to give mad props to your family for taking it all in stride. It seems like you have some very understanding people with a sense of humor around you.
Half of my family wouldn't get it (husband's side) and the other half would be appalled (my side).
It's great when people can laugh WITH you.