Top Definition
When your sibling cums into a condom and freezes it. Later, the condom is taken out of the freezer and used as a dildo.
Ian: Last night my sister wanted a Cumberland Pipeline, so I jacked off to a Hannah Montana music video.
Jen: How did your sister like it?
Ian: She still prefers the Alaskan Pipeline.
by AK<4 July 08, 2012
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