You miss him, or your mind is just not used to not having him around so it recreates him through your dreams.

Centimeters cubed. It's the units you use for calculating volume. Lets say there is a cube with a height, length, and width of 2 cm. You find the volume of that cube by multiplying the 3 dimensions together. 2x2x2=8. If you were calculating in cm you would say it has a volume of 8Cm3.

One hit of marijuana will be enough to get into your bloodstream and urine, and should clear up after about a week. Though if you're a constant smoker, or you smoke a lot at one time, it can take months.

Johnny Cash has a somewhat deep voice

1x77
7x11
those are the only integers, but there is an infinite amount of decimals

Buddha, meditated under a tree for 40 years and reached nirvana.