Procure por qualquer palavra, como fleek:
Opposite to someone who has a screw loose i.e a bit dopey.
You obviously had your head screwed on while you were tackling that piece of coursework.
por Simon Batt 13 de Janeiro de 2005
Someone who is "all there" in a mental sense but not necessarily in a physical one.
Steven Hawking is totally screwed on man.
por Simon Batt 12 de Janeiro de 2005