Acronym that stands for Sand In Vagina Syndrome. It is a condition that affects those unwilling to participate in a social event or are scared to do something dangerous.
Rob: Hey James you want to go party tonight?
James: No. Don't really feel like it.
Rob: Oh, your S.I.V.S acting up again?
James: No. Don't really feel like it.
Rob: Oh, your S.I.V.S acting up again?
by rtadlock August 26, 2009