A person, male or female, who is situationally insensitive. Also known as, someone who does things that are inappropriate regarding the current situation. Many things wine baggers may do are considered party fouls.
"Matty is such a wine bagger, he pulled out his dick in my kitchen when my parents were around!"
'Matty is a dumb wine bagger, he wet the weed!"
'Matty is a dumb wine bagger, he wet the weed!"
by the Deutschland dog April 14, 2010