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 boots (with) Although Green dates this one to the '80s, the phrase supposedly refers to Old West sexy times. When cowboys got with the ladies, they'd place their boots under the bed. The ensuing action would knock the shoes together repeatedly, creating noise and an enduring, weird slang for sex. Boink. This word is supposed to evoke the sounds of mattress springs through its blending of the words boing and bonk..