pig it - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Live in a slovenly way, as in Ten roommates shared that small house, and as you might guess they were pigging it. [Slang; late 1800s]