False,
You actually need social intelligence to understand humor,
If you going around thinking nothing is funny, it more likely speaks to a lack of intelligence or disability than the other way around.
There are people who walk around thinking that an over abundance of "maturity" is a positive trait. And they display this by trying to be serious at all times
Maturity isn't just taking yourself serious, its having the wisdom to understand and appreciate differing perspectives. Thats the difference between intelligence and what i call "performative maturity."