Yup. It may be that the dementia has made this more frequent for Biden, but the bottom line is that he is a stupid person and he has a limited capacity for humor, and the humor he is capable of is just very low-level stuff. He has a real knee-slapper of a joke (”Don’t jump!”) and he thinks he’s has been getting laughs with this witticism for many decades. This what dumb people do.
As Joe himself said when visiting Ireland: I may be Irish but I’m not stupid..
Derp