Humor might be subjective, but as far as I'm concerned, there are a few topics anyone with a functioning sense of humor should find objectively funny -- namely farts, people getting hit in the testicles and the number 69.
After watching this video, I think I'm ready to add "denture malfunctions" to that list.
I can only assume the first question most people over the age of 100 ask themselves in the morning is,
What's going to go wrong today?
And in the case of this grandmother's 102nd birthday, the answer would appear to be, "I'm not going to use enough denture cream."