For most bikes, the gas flow from the tank is controlled by a petcock located on the underside of the gas tank. Just turn it to the "OFF" position and you should be able to remove it without spilling any gas. Always, check your manual though, because some tanks have cross-overs that run under the frame down-tube or coils mounted to it.
noun \sə-ˈvil-yən also -ˈvi-yən\
: a person who is not a member of the military or of a police or firefighting force
"Citizen" merely refers to anyone born or naturalized into a…"
"A civilian is someone not in the military. Check the dictionary. There are other words, like citizen, that could be used. Of course saying citizen doesn't have the same "I'm cool" factor as pretending to be…"
"interesting question. It reminds of when Jesus went to his crucifixion and he instructed his disciples to go get the donkey, to fulfill the old testament scripture. obviously you dont need special knowledge to untie a donkey but sometimes there are…"