Everything in life can be solved with some sort of phallic object. Look at swords, spears, guns, bullets, dildos, bombs, pens, etc. The genitals of a man were designed to get things done and thus the tools to get things done are designed after them.
In that same video someone comes out with an AK47 but it's to yell at some guys in a car who refuse to just drive on the road and end up blocking everyone else.