numpty การใช้

Bored mumbler in suit shakes hands with minor numpty from somewhere or other.
The following year he returned to Dunfermline's Carnegie Hall playing the role of Numpty in an adaptation of Snow White.
Numpty car drivers wishing to take a shortcut will sometimes try to follow another vehicle through, attempting to fool the system into only registering the first vehicle.
Now, I'm no numpty, I've been around I . T . for over 40 years, but neither am I a lawyer or an accountant.
My question is very simple ( so has probably been addressed, and numpty here simply can't find what she wants, she's not well and it's affecting her brain ).