This is the sound made by Japanese women when attempting to say the name 'William'. Contrary to what some people mistake as an association with 'weed' or marijuana.
A state of having smoked just the right amount of marijuana; enough to pleasantly alter one's mindset, but no too much so as to make one incapacitated.
From the time that I wake to the time the sleep,
My peaks are high and my troughs are deep.
I smoke a spliff, take tokes from a bong.
I'm at happy weedium all day long.