Someone who's right on the cusp of sexual activity; derived from "verging" and "virgin." And yes, this is tongue-in-cheek.
Crystal was fixin' to have sex with Trevor, but I think she's still a vergin.
puke, barf, chuck, hurl, toss your cookies/lunch, up-chuck (similar to "chuck"), ralph, pray to the porcelain god,
Micheal ate bad lintels during lunch, so he is going to VOMIT in the trashcan.