Quick Answer. According to Science NetLinks, cells convert energy for your body and continually divide to make more cells for growth and repair. The body has about 200 different types of cells, and specific cells have assorted jobs to do. The various shapes of body cells depends on each cell's job.
knock boots. verb - intransitive. to have sexual intercourse. They were knocking boots 'til sunrise. See more words with the same meaning: sex, sexual intercourse.
Knock knees is a condition in which the knees touch, but the ankles do not touch. The legs turn inward. Infants start out with bowlegs because of their folded position while in their mother's womb. The legs begin to straighten once the child starts to walk (at about 12 to 18 months).