From Wiktionary, the free dictionary
English citations of vegs
1995, James Rogers, Savage Life, Serpent's Tale, →ISBN, page 140:She's totally spaced out the whole time. I mean she just vegs out in front of the TV all day.
2001 October 12, Lesmond, “Mirhanda, please stop.”, in alt.fan.cecil-adams[1] (Usenet):He vegs on the couch drinking his milk watching Teletubbies (or whatever) while I finish reading e-mail.
2006 09, “The Average Woman”, in Women's Health, →ISSN, page 148, column 4:Number of hours a week the AW [average woman] vegs out in front of the TV: 12
