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1.
1. fuck someone in the ass
2. insert a toilet paper tube into their loose asshole
3. insert gerbil into tube
4. light a match at the end of the tube to force gerbil farther up inside asshole
5. remove tube and enjoy the wriggling of a small to medium sized animal inside your anus
6.good luck getting it out
Last night after a felching session, Bill gave Tom a gerbil rocket
by Jim McFunk April 29, 2006
 
2.
The act of Gerbiling,and,then,trying to get the gerbil back out with a naked flame,to find that your ''natural gases'' are flammable.
''Oh shit,that Hamster Just Got Gerbil Rocketed''
by zigger December 06, 2007