Why do you think some people who have average intelligence have a somewhat frequent tendency to say stupid stuff, and ask stupid questions?

Probably just trying to make conversation and it comes out wrong
Might be slightly autistic
Social Anxiety/Awkwardness
Just not thinking before asking/saying things
Select gender and age to cast your vote:
Why do you think some people who have average intelligence have a somewhat frequent tendency to say stupid stuff, and ask stupid questions?
Post Opinion