As a child, Dad bought the family a quicksand box for us to play in as part of an Axis natural selection experiment he saw on the "World at War" TV Show. I was an only child....eventually, so I had to find ways to entertain myself and making myself chuckle every now and then became a way to relieve the boredom. I don't think very hard about trying to amuse myself and others, I just shoot stuff out of my mind and some laugh and some don't. It feels good to make people laugh but I'm not bothered at all if people don't. Some things work and some things don't.
So I don't find myself hilarious per se, but If giving myself a chuckle every now and then is a crime, then I am guilty as charged.