SEE AND LISTEN CAREFULLY FOR WHAT SHE SAYS!
Well, do we need to say more?
How can somebody be so stupid, or in others, so silly?
Asinine also means behaving like an ass: asinine looks, asinine stubbornness.
The dictionary definitions for ASININE are as follows:
1. Stupid or silly behavior. (adjective)
2. Behaving like or resembling an ass. (adjective)