шукати будь-яке слово, наприклад the eiffel tower:
Someone who is "all there" in a mental sense but not necessarily in a physical one.
Steven Hawking is totally screwed on man.
додав Simon Batt 12 Січень 2005
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.
додав Simon Batt 13 Січень 2005