Crutch words or fillers like umm..., you know... and like... make their way into a speech unknowingly. These words do not add meaning to the sentence, and often just make a person look like a blabbering fool.
Coca Cola is a carbonated beverage made by the Coca Cola company based in the Atlanta. The brand name originates from its two key ingredients: cocaine and caffeine, which are extracted respectively from the coca leaf and the kola nut, hence its name Coca-Cola.
Coca Cola has been invented by doctor/pharmacist John Pemerton in 1886. John believed that this drink was medicine and since it was made from coca leaves it can relieve you from pain and exhaustion. This all makes sense since coca leaves contain cocaine (from 0.1% to 0.9% depending on altitude where grown).